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Medical Parity
LLM Training
Knit the Grid
Jinx or Jackpot
Irrigation Interlock
Honey Cake
Greta's Game
Fragmented Nim
Elevator Against Humanity
Doorway
Cacti Classification
Battle of Arrays
Alphabet City
Bug Is Feature (Conditional Version)
Bug Is Feature (Unconditional Version)
Balance
Control Car (Hard Version)
Control Car (Easy Version)
No Effect XOR
Insolvable Disks
XOR-factorization
Ashmal
Carnival Wheel
Omega Numbers
Remove at the lowest cost
Fibonacci Paths
Odd Process
Optimal Shifts
Operations with Inversions
XOR Array
Little Fairy's Painting
Mosaic Tree
Game of Scientists (Version 2)
Game of Scientists (Version 1)
Secret Message
Beautiful Patterns (Hard Version)
Beautiful Patterns (Easy Version)
Wishing Cards
Needle in a Haystack
Isla's Memory Thresholds
Shiro's Mirror Duel
Taiga's Carry Chains
Kanade's Perfect Multiples
Niko's Tactical Cards
Sleeping Through Classes
New Kingdom
Maximum Distance To Port
Maximum Color Segment
Kindergarten Homework
Sliding Tiles
Birthday
Shuffling Cards with Problem Solver 68!
Gene Editor
Cluster Computing System
Number Maze
Divisor Card Game
Circles Are Far from Each Other
Buses
ASCII Art Contest
Shiori Miyagi and Maximum Array Score
Sakura Adachi and Optimal Sequences
Rae Taylor and Trees (hard version)
Anisphia Wynn Palettia and Good Permutations
Rae Taylor and Trees (easy version)
Renako Amaori and XOR Game (hard version)
Renako Amaori and XOR Game (easy version)
Yuu Koito and Minimum Absolute Sum
Shizuku Hoshikawa and Farm Legs
Build XOR on a Segment
Binary Strings and Blocks
Almost Roman
Quotient and Remainder
Addition on a Segment
Maximum Neighborhood
Subsequence Problem
Points Selection
Removal of a Sequence (Hard Version)
Removal of a Sequence (Easy Version)
Range Operation
Drifting Away
Alice and Bob
Mukhammadali and the Smooth Array
Tree, TREE!!!
khba Loves to Sleep!
Yet Another Array Problem
Isamatdin and His Magic Wand!
Your Name
Square?
Tab Closing
Same Difference
Arctic Acquisition
Rainbow Branch
Path Split
Binary Wine
Marble Council
Cyclic Merging
PalindromePalindrome
Pointless Machine
Chain Prefix Rank (Hard Version)
Chain Prefix Rank (Easy Version)
Journey
Copy String
Dungeon
Even Modulo Pair
Sequence Game
Plegma
Diadrash (Hard Version)
Diadrash (Easy Version)
Monopati
Siga ta Kymata
Souvlaki VS. Kalamaki
Beautiful Problem
Beautiful Tree
Beautiful Intervals
Beautiful Palindromes
Beautiful Permutation
Beautiful XOR
Beautiful String
Beautiful Average
Cycle Sort
Bitwise And Equals
SubMST
Left is Always Right
Locked Out
Loyalty
Make Connected
Round Trip
Reverse XOR
Distinct Elements
MEX Partition
Grand Finale: Snakes
Super-Short-Polynomial-San
Inverse Minimum Partition (Hard Version)
Inverse Minimum Partition (Easy Version)
Twin Polynomials
Rectangles
MAD Interactive Problem
Distinct GCDs (Hard Version)
Distinct GCDs (Easy Version)
Sink
Palindrome Flipping
Annoying Game
Split
Suspension
Hyper Smawk Bros
Keygen 3
Isaac's Queries
Git Gud
Adjusting Drones
Billion Players Game
Meximum Array 2
Expansion Plan 2
Dungeon Equilibrium
Strange Operation (Hard Version)
Strange Operation (Easy Version)
Best Time to Buy and Sell Stock
Find the Last Number
Maximum GCD on Whiteboard
Strange Machine
Pizza Time
Juan's Colorful Tree
Mimo & Yuyu
Batteries
The Ancient Wizards' Capes
Abraham's Great Escape
El fucho
Bombing (Hard Version)
Bombing (Easy Version)
No Mind To Think
Catshock
No Cost Too Great (Hard Version)
No Cost Too Great (Easy Version)
Make it Zigzag
Notelock
Odd Queries on Odd Array
Zero Trailing Factorial
Not Alone
Symmetrical Polygons
Bitwise Reversion
Circle of Apple Trees
Victorious Coloring (Hard Version)
Victorious Coloring (Easy Version)
Query Jungle
Triple Attack
Monotone Subsequence
Division Versus Addition
Triple Removal
Catching the Krug
Increase or Smash
Incremental Stay
Incremental Subarray
Counting Is Fun: The Finale
Cycle Closing
Hidden Single (Version 2)
Hidden Single (Version 1)
Attraction Theory
Limited Edition Shop
Grid Counting
Incremental Path
Buratsuta 3
Nezuko in the Clearing
Hidden Knowledge of the Ancients
A and B
MEX rose
Unconventional Pairs
Be Positive
Farmer John's Last Wish
Gravity Falls
Destruction of the Dandelion Fields
Pacer
Lasers
Sublime Sequence
Longest Increasing Path (Hard Version)
Longest Increasing Path (Easy Version)
Maxflow GCD Coloring
Modular Tetration
Exchange Queries
Maximum OR Popcount
Game on Array
Rabbits
Multiple Construction
Shortest Increasing Path
Bubble Sort
Yet Another MEX Problem
Max Sum OR (Hard Version)
Max Sum OR (Easy Version)
Wrong Binary Search
Merging the Sets
Equal Occurrences
Cost of Coloring
Long Journey
Predicting Popularity
Inversion Value of a Permutation
Monocarp's String
Deck of Cards
Candies for Nephews
Bracket Groups
Looking at Towers (difficult version)
Looking at Towers (easy version)
Price Tags
Non-Descending Arrays
Maximum Cost Permutation
Cut the Array
Increasing Xor
Make Good
Inversion Graph Coloring (Hard Version)
Inversion Graph Coloring (Easy Version)
Max Tree
Discounts
All Lengths Subtraction
Color the Tree
Merging Vertices in a Graph
Good Robot Paths
Array Reduction
Perfect Cut
Avoid Minimums
Minimum on Subarrays
Games
Furniture Store
Sum Minimisation
Prime Gaming (Hard Version)
Prime Gaming (Easy Version)
A Cruel Segment's Thesis
Ultimate Value
Another Divisibility Problem
Shift Sort
Cake Collection
Maple and Multiplication
Ode to the Bridge Builder
Determinant Construction (Hard Version)
Determinant Construction (Easy Version)
Antiamuny and Slider Movement
Maple and Tree Beauty (Hard Version)
Maple and Tree Beauty (Easy Version)
Antiamuny Wants to Learn Swap
Cake Assignment
Cry Me a River
Prefix Maximum Invariance
Mexification
Replace with Occurrences
Maximum Even Sum
Fun Permutation
Collatz Conjecture
Like the Bitset
In the Dream
To the Infinity
Beyond the Palindrome (Hard Version)
Beyond the Palindrome (Easy Version)
From the Unknown (Hard Version)
From the Unknown (Easy Version)
By the Assignment
For the Champion
Against the Difference
Permutation Oddness
Power Boxes
Sliding Tree
Even Larger
Add 0 or K
Painting With Two Colors
Flint and Steel
I Yearned For The Mines
Chicken Jockey
The Nether
Villagers
Redstone?
Famous Choreographer
Rada and the Chamomile Valley
Arithmetics Competition
From 1 to Infinity
The Cunning Seller (hard version)
The Cunning Seller (easy version)
The Secret Number
Homework
Sea, You & copriMe
Wafu!
Unjust Binary Life
Adjacent XOR
Arboris Contractio
Make it Equal
Alternating Series
Lever
Pathless
Submission is All You Need
Top-K Tracker (Hard Version)
Top-K Tracker (Easy Version)
Induced Subgraph Queries
Permutation Blackhole
Interactive RBS (Hard Version)
Interactive RBS (Medium Version)
Interactive RBS (Easy Version)
Stay or Mirror
Double Perspective
Strict Triangle
Submedians (Hard Version)
Submedians (Easy Version)
Sum of LDS
Leftmost Below
Deque Process
Recycling Center
23 Rises Again
Inter Active (Hard Version)
Inter Active (Easy Version)
Hamed and AghaBalaSar
Ancient Tree
Root was Built by Love, Broken by Destiny
Trip Shopping
Hamiiid, Haaamid... Hamid?
Mix Mex Max
Big Wins! (hard version)
Big Wins! (easy version)
1-1-1, Free Tree!
G-C-D, Unlucky!
This Is the Last Time
I Will Definitely Make It
No Casino in the Mountains
Only One Digit
Timofey and Docker
Sets of Complementary Sums
Segments Covering
Count Good Numbers
Left and Down
Difficult Contest
Lexicographic Partition
Longest Good Subsequence
Maximise Sum
Appending Permutations (Hard Version)
Appending Permutations (Easy Version)
Make it Zero
Make a Palindrome
Subset Multiplication
Minimise Sum
Deranged Deletions
Modular Sorting
Minimize Fixed Points
MEX Count
Binary String Battle
Prefix Min and Suffix Max
Tournament
Blackboard Game
Tree Parking
Colorful Polygon
Greedy Grid Counting
Traffic Lights
Manhattan Pairs
Pile Shuffling
Greedy Grid
Ice Baby
Gangsta
Yamakasi
Sponsor of Your Problems
1709
Those Who Are With Us
Above the Clouds
Letter Home
Eulerian Line Graph
Superb Graphs
Lanes of Cars
Matrix game
Divine Tree
Square Pool
Square of Rectangles
Volcanic Eruptions
And Constraint
Token Removing
A Good Problem
Line Segments
Add or XOR
Shifts and Swaps
Grid Coloring
Red Light, Green Light (Hard version)
Red Light, Green Light (Easy version)
Make It Beautiful
Make It Permutation
Equal Subsequences
Incessant Rain
Omg Graph
Wildflower
Lost Soul
Retaliation
Cool Partition
Shrink
False Alarm
Gellyfish and Baby's Breath
Gellyfish and Tricolor Pansy
Gellyfish and Lycoris Radiata (Hard Version)
Gellyfish and Lycoris Radiata (Easy Version)
Gellyfish and Mayflower
Gellyfish and Forget-Me-Not
Gellyfish and Eternal Violet
Gellyfish and Camellia Japonica
Gellyfish and Flaming Peony
Build an Array
Small Operations
Kirei Attacks the Estate
Come a Little Closer
Need More Arrays
Not Quite a Palindromic String
Square Year
Two Arrays
From Kazan with Love
Cheater
Smilo and Minecraft
Good Start
Shashliks
Variables and Operations
Tree Colorings
Reachability and Tree
Coloring Game
Shrinking Array
Race
Divisible Subarrays
Puzzle
Changing the String
Creating a Schedule
Equal Values
Fibonacci Cubes
Energy Crystals
Faculty
Melody
Fewer Batteries
Racing
Down with Brackets
Fashionable Array
Penguin Steps
Binary String Wowee
D/D/D
Hacking Numbers (Hard Version)
Hacking Numbers (Medium Version)
Hacking Numbers (Easy Version)
Slice to Survive
It's Time To Duel
Fallen Towers
Spruce Dispute
Needle in a Numstack
Neo's Escape
SUMdamental Decomposition
Permutation Warm-Up
Cycling (Hard Version)
Cycling (Easy Version)
Ain and Apple Tree
Apple Tree Traversing
Maximum Subarray Sum
Apples in Boxes
LRC and VIP
Baudelaire (hard version)
Baudelaire (easy version)
Goblin
Wolf
Flower Boy
Cherry Bomb
St. Chroma
Dr. TC
Modulo 3
Numbers and Strings
Unpleasant Strings
Array and GCD
Card Game
Move to the End
Three Decks
Maximize Nor
Keep the Sum
Local Construction
Median Splits
Binary Typewriter
Common Multiple
The Picky Cat
Dinner Time
Shoo Shatters the Sunshine
Kia Bakes a Cake
Mani and Segments
23 Kingdom
Quartet Swapping
Mex in the Grid
Sasha and the Apartment Purchase
Vadim's Collection
Lost Luggage
Clearing the Snowdrift
Bermuda Triangle
Baggage Claim
Sports Betting
Wonderful XOR Problem
Wonderful Guessing Game
Wonderful Impostors
Wonderful Teddy Bears
Wonderful Lightbulbs
Wonderful City
Wonderful Gloves
Wonderful Sticks
La Vaca Saturno Saturnita
Chimpanzini Bananini
Trulimero Trulicina
Boneca Ambalabu
Tung Tung Sahur
Brr Brrr Patapim
Bobritto Bandito
Trippi Troppi
Shorten the Array
Hackers and Neural Networks
Min Max MEX
Skibidi Table
Simple Repetition
Expensive Number
Ideal Generator
Andryusha and CCB
She knows...
Mishkin Energizer
Asuna and the Mosquitoes
Lady Bug
Kamilka and the Sheep
Gleb and Boating
Igor and Mountain
Interesting Ratio
Place of the Olympiad
Combination Lock
Team Training
Olympiad Date
Dining Hall
Pushing Balls
Treasure Hunt
Black Cat Collapse
Conditional Operators
Key of Like (Hard Version)
Key of Like (Easy Version)
Canteen (Hard Version)
Canteen (Easy Version)
Simple Permutation
Online Palindrome
Zebra-like Numbers
Even String
Disappearing Permutation
Large Array and Segments
Cloudberry Jam
Serval and Colorful Array (Hard Version)
Serval and Colorful Array (Easy Version)
Serval and Modulo
Serval and Kaitenzushi Buffet
Serval and The Formula
Serval and Final MEX
Serval and String Theory
Turtle and Nediam 2
Wish Upon a Satellite (Hard Version)
Wish Upon a Satellite (Easy Version)
Skyscape
Blossom
Arcology On Permafrost
You Soared Afar With Grace
MIN = GCD
Max and Mod
Floor or Ceil
Binary Matrix
Hard Formula (Hard Version)
Hard Formula
Hot Matrix
Quantifier
MST in Modulo Graph
Quaternary Matrix
Balancing
Math Division
Order Statistics
Card Flip
Best Runner
Strong Connectivity Strikes Back
Cute Subsequences
Dreaming Is Not Harmful
Arithmetic Exercise
Alice, Bob, And Two Arrays
Scammy Game Ad
Vicious Labyrinth
Final Verdict
RGB Walking
AND x OR
Another Folding Strip
Maximum Polygon
Binary Subsequence Value Sum
Finding OR Sum
Breach of Faith
Beautiful Sequence Returns
XOR Matrix
Equalization
Two Colors
Array Recoloring
To Zero
Game With Triangles: Season 2
Counting Necessary Nodes
Empty Triangle
Counting Points
XOR and Triangle
The Third Side
Draw a Square
Can You Reach There?
Boarding Queue
Book Sorting
Gathering Sharks
Squares on Grid Lines
Secret Lilies and Roses
Corrupted File
Hold the Star
Minus Operator
Tower of Hanoi
Cactus Connectivity
Three-Dimensional Embedding
Control Towers
I've Been Flipping Numbers for 300 Years and Calculated the Sum
Goodbye, Banker Life
Do You Love Your Hero and His Two-Hit Multi-Target Attacks?
For Wizards, the Exam Is Easy, but I Couldn't Handle It
Creating Keys for StORages Has Become My Main Skill
Having Been a Treasurer in the Past, I Help Goblins Deceive
New World, New Me, New Array
Towering Arrays
LeaFall
Infinite Sequence (Hard Version)
Infinite Sequence (Easy Version)
Trapmigiano Reggiano
Perfecto
The Play Never Ends
Friends and Pizza
Game with Binary String
Tree Jumps
Limited Repainting
Robot Program
FizzBuzz Remixed
Graph Inclusion
A, B, AB and BA
Palindrome Shuffle
Beautiful Sequence
Set of Strangers
Was there an Array?
Amusement Park Rides
The Ultimate Wine Tasting Event
Pinball
Statues
A Very Long Hike
Mascot Naming
Porto Vs. Benfica
Morse Code
Ads
Urban Planning
Condorcet Elections
Devyatkino
Two Large Bags
Adjacent Digit Sums
Curse
Tropical Season
Club of Young Aircraft Builders (hard version)
Club of Young Aircraft Builders (easy version)
Bitwise Slides
White Magic
Object Identification
Bro Thinks He's Him
Skibidus and Capping
Skibidus and Slay
Skibidus and Rizz
Skibidus and Sigma
Skibidus and Fanum Tax (hard version)
Skibidus and Fanum Tax (easy version)
Skibidus and Ohio
Skibidus and Amog'u
We Be Summing
Mycraft Sand Sort
Eating
Remove the Ends
Variety is Discouraged
Brogramming Contest
Counting Is Not Fun (Hard Version)
Counting Is Not Fun (Easy Version)
Triangle Tree
Game With Triangles
Remove Exactly Two
Subsequence Update
Minimal Coprime
Galaxy Generator
Permutation Factory
Traveling Salescat
The Game (Hard Version)
The Game (Easy Version)
Balanced Tree
Cirno and Operations
Clockwork
String
Kevin and Nivek
Kevin and Stones (Hard Version)
Kevin and Stones (Easy Version)
Kevin and Teams
Kevin and Binary String (Hard Version)
Kevin and Binary String (Easy Version)
Kevin and And
Kevin and Numbers
Kevin and Puzzle
Kevin and Geometry
Kevin and Arithmetic
Bugged Sort
Multiplicative Arrays
Graph Composition
Subtract Min Sort
Game of Mathletes
Farmer John's Card Game
Fibonacciness
Stop Gaming (Hard Version)
Stop Gaming (Easy Version)
Graph and Graph
Customer Service
Cost of the Array
Milya and Two Arrays
Coffee Break
Formation
Another Exercise on Graphs (hard version)
Another Exercise on Graphs (Easy Version)
Gifts Order
Trip to the Olympiad
Gorilla and the Exam
MEX Table
Xor of Median (Hard Version)
Xor of Median (Easy Version)
Nested Segments
Unique Median
Palindromic Subsequences
Find the Permutation
Shape Perimeter
Cosmic Divide
Haystacks
Scarecrow
The Trail
Crafting
Two Frogs
Affectionate Arrays (Hard Version)
Affectionate Arrays (Easy Version)
Delicate Anti-monotonous Operations
Naive String Splits
Earnest Matrix Complement
Resourceful Caterpillar Sequence
Refined Product Optimality
Bewitching Stargazer
Outstanding Impressionist
Tender Carpenter
Managing Cluster
Legacy Screensaver
Knowns and Unknowns
Judicious Watching
Incompetent Delivery Guy
Hunting Hoglins in Hogwarts
Geometric Balance
Fix Flooded Floor
Expression Correction
DAG Serialization
Cactus without Bridges
BitBitJump
Adrenaline Rush
Snakes
Joker
Best Price
Counting Pairs
Preparing for the Exam
Preparing for the Olympiad
Tree Destruction
Maximum modulo equality
Three Strings
Digital string maximization
Uninteresting Number
Transfusion
Line Breaks
MEX OR Mania
Broken Queries
Shift + Esc
MEX Cycle
pspspsps
MEX Destruction
Kevin and Puzzle (Hard Version)
Kevin and Puzzle (Easy Version)
Kevin and Strange Operation
Kevin and Matrices
Kevin and Math Class
Kevin and Bipartite Graph
Kevin and Competition Memories
Kevin and Binary Strings
Kevin and Permutation
Kevin and Combination Lock
Replace Character
Alyona and a Square Jigsaw Puzzle
Yandex Cuneiform (Hard Version)
Yandex Cuneiform (Easy Version)
Cheops and a Contest (Hard Version)
Cheops and a Contest (Easy Version)
For the Emperor!
Adventurers
Move Back at a Cost
Swap Columns and Find a Path
Mirror Maze
Buggy DFS
GCDDCG
Xorderable Array
Microwavable Subsequence
Missing Separators
X Aura
Grid Game 3-angle
Narrower Passageway
Aquatic Dragon
Saraga
ICPC Square
Scrambled Scrabble
Hard Demon Problem
Medium Demon Problem (hard version)
Medium Demon Problem (easy version)
Easy Demon Problem
Insane Problem
Harder Problem
Hard Problem
Normal Problem
Easy Problem
Problem with Queries
Nim
Matrix Transformation
Problem about GCD
Sums on Segments
Digits
Coin Transformation
Two Subarrays
Vertex Pairs
Recommendations
Competitive Fishing
Game with Colored Marbles
Greedy Monocarp
Railway Construction
Selection Sort
Building Castle
Trophic Balance Species
Bottle Arrangement
Auto Complete
Sheet Music
Grid Game
Segmentation Folds
Beautiful Array
Drunken Maze
Cube
Bowling Frame
The Bento Box Adventure
Number of Cubes
Control of Randomness
Non Prime Tree
Ordered Permutations
Paint a Strip
Game of Division
Cool Swap Walk (Hard Version)
Cool Swap Walk (Easy Version)
Shohag Loves Pebae
Shohag Loves Counting (Hard Version)
Shohag Loves Counting (Easy Version)
Shohag Loves Inversions
Shohag Loves GCD
Shohag Loves XOR (Hard Version)
Shohag Loves XOR (Easy Version)
Shohag Loves Strings
Shohag Loves Mod
Fixing the Expression
Royal Flush
Bridge Renovation
Grid Walk
Waiting for...
Polyathlon
Galactic Council
Guess One Character
Alternative Platforms
Barrels
Divide OR Conquer
DIY
Make It Equal
Bonus Project
Natlan Exploring
Ardent Flames
Kachina's Favorite Binary String
Sharky Surfing
Superultra's Favorite Permutation
Intercepted Inputs
Twice
Library of Magic
XORificator 3000
Reverse the Rivers
I Love 1543
Anya and 1100
Startup
Quintomania
Peak Productivity Forces
Go Learn! (Hard Version)
Go Learn! (Easy Version)
Tree Operations
Monster
Yet Another Real Number Problem
Alya and Permutation
Everyone Loves Tres
Sliding
Rayan vs. Rayaneh
Simurgh's Watch (Hard Version)
Simurgh's Watch (Easy Version)
Khayyam's Royal Decree (Hard Version)
Khayyam's Royal Decree (Easy Version)
Permutations Harmony
Darius' Wisdom
Trapped in the Witch's Labyrinth
Rakhsh's Revival
King Keykhosrow's Mystery
Sakurako and Chefir
Kosuke's Sloth
Sakurako, Kosuke, and the Permutation
Kousuke's Assignment
Sakurako's Field Trip
Sakurako and Water
Sakurako and Kosuke
Peanuts
Balanced
Genokraken
Trinity
Medians
Circuit
Penchick and Even Medians
Penchick and Chloe's Trees
Penchick and Desert Rabbit
Penchick and BBQ Buns
Penchick and Satay Sticks
Penchick and Modern Monument
The Destruction of the Universe (Hard Version)
The Destruction of the Universe (Easy Version)
Orangutan Approved Subarrays
MEXimize the Score
QED's Favorite Permutation
A TRUE Battle
Minimise Oneness
A Gift From Orangutan
Variance Challenge
Message Spread
Balanced Problem
Palindrome Everywhere
Common Generator
Cool Graph
New Rating
Replacement
Set
Alice's Adventures in Addition
Alice's Adventures in the Rabbit Hole
Alice's Adventures in Cards
Alice's Adventures in Cutting Cake
Alice's Adventures in Permuting
Alice's Adventures in ''Chess''
Bit Game (Hard Version)
Bit Game (Easy Version)
The Endspeaker (Hard Version)
The Endspeaker (Easy Version)
Add Zeros
Stalin Sort
Rectangle Arrangement
Bermart Ice Cream
Best Subsequence
Sums of Segments
Action Figures
Black Cells
Perpendicular Segments
Variable Damage
Choose Your Queries
Attribute Checks
New Game
Binomial Coefficients, Kind Of
Two Screens
Buying Lemonade
Profitable Interest Rate
Hills and Pits
Tree of Life
Many Games
C+K+S
Skipping
Concatenation of Arrays
Billetes MX (Hard Version)
Billetes MX (Easy Version)
Asesino (Hard Version)
Asesino (Easy Version)
Gerrymandering
Kar Salesman
Bus to Pénjamo
Digital Village (Extreme Version)
Digital Village (Hard Version)
Digital Village (Easy Version)
Boss, Thirsty
Adjust The Presentation (Hard Version)
Adjust The Presentation (Easy Version)
Maximize Mex
Meaning Mean
Count Leaves
Expected Power
Connect the Dots
Bitwise Balancing
Brightness Begins
Find Minimum Operations
All Pairs Segments
Max Plus Size
Speedbreaker Counting (Hard Version)
Speedbreaker Counting (Medium Version)
Speedbreaker Counting (Easy Version)
Complex Segments (Hard Version)
Complex Segments (Easy Version)
Max Plus Min Plus Size
Tree Pruning
Speedbreaker
Cards Partition
Robin Hood Archery
Milky Days
Sheriff's Defense
Rendez-vous de Marian et Robin
Robert Hood and Mrs Hood
Robin Hood in Town
Robin Hood and the Major Oak
Robin Helps
Game in Tree (Hard Version)
Game in Tree (Easy Version)
Prefix GCD
Minimize the Difference
Password Cracking
Battle for Survive
Zhan's Blender
Message Transmission Error (hard version)
Message Transmission Error (easy version)
Three Brothers
Alternating Sum of Numbers
Yunli's Subarray Queries (extreme version)
Yunli's Subarray Queries (hard version)
Yunli's Subarray Queries (easy version)
Firefly's Queries
Klee's SUPER DUPER LARGE Array!!!
Satyam and Counting
The Legend of Freya the Frog
osu!mania
Minimize!
Sakurako's Test
Sakurako's Task
Sakurako's Box
Alternating String
Sakurako's Hobby
Longest Good Array
Square or Not
Sakurako's Exam
Dora and C++
Index and Maximum Value
Dora's Set
Dora's Paint
Iris's Full Binary Tree
Iris and Adjacent Products
Eri and Expanded Sets
Iris and the Tree
Iris and Game on the Tree
Subtangle Game (Hard Version)
Subtangle Game (Easy Version)
Alter the GCD
Lazy Narek
The Strict Teacher (Hard Version)
The Strict Teacher (Easy Version)
Simple Palindrome
Substring Compression
Not a Nim Problem
Colored Portals
Splitting Items
Game with Doors
Closest Point
Turtle and Three Sequences
Turtle and Inversions (Hard Version)
Turtle and Inversions (Easy Version)
Turtle and a MEX Problem (Hard Version)
Turtle and a MEX Problem (Easy Version)
Turtle and Good Pairs
Turtle and Piggy Are Playing a Game 2
Turtle and Good Strings
Counting 101
Lattice Optimizing
Court Blue (Hard Version)
Court Blue (Easy Version)
Cosmic Rays
DFS Checker (Hard Version)
DFS Checker (Easy Version)
Black Circles
Removals Game
Distanced Coloring
Deterministic Heap (Hard Version)
Deterministic Heap (Easy Version)
Longest Max Min Subsequence
Guess The Tree
Generate Permutation
Make All Equal
Ksyusha and the Loaded Set
Call During the Journey
Color Rows and Columns
Photoshoot for Gorillas
Right Left Wrong
Numeric String Template
Seating in a Bus
Primary Task
Ruler (hard version)
Ruler (easy version)
Expected Median
Triple Operations
Slavic's Exam
Showering
A+B Again?
Eliminating Balls With Merging (Hard Version)
Eliminating Balls With Merging (Easy Version)
Determine Winning Islands in Race
Perform Operations to Maximize Score
Minimize Equal Sum Subarrays
Find K Distinct Points with Fixed Center
Chips on a Line
Level Up
Maximize the Root
Even Positions
Make Three Regions
Strong Password
Penacony
Bomb
Decode
Fun
Sort
Scale
Legs
Let Me Teach You a Lesson (Hard Version)
Let Me Teach You a Lesson (Easy Version)
Cases
Squaring
Bouquet (Hard Version)
Bouquet (Easy Version)
Diagonals
Fortnite
Minecraft
Stardew Valley
Wooden Game
Funny Game
Hungry Games
Fun Game
Diverse Game
Dyn-scripted Robot (Hard Version)
Dyn-scripted Robot (Easy Version)
Xor-Grid Problem
Med-imize
Light Switches
Parity and Sum
Question Marks
Ultra-Meow
Valuable Cards
Novice's Mistake
Test of Love
Gorilla and Permutation
Angry Monk
Only Pluses
Prime Split Game
Grid Reset
Triangle Formation
Prime XOR Coloring
Absolute Zero
AND Reconstruction
Maximize the Last Element
Polygonal Segments
Catch the Mole(Hard Version)
Catch the Mole(Easy Version)
Grid Puzzle
Mad MAD Sum
Array Craft
Submission Bait
Simultaneous Coloring
Distance to Different
Smithing Skill
Two Movies
Substring and Subsequence
Catch the Coin
Heartbeat
Range Minimum Sum
The Omnipotent Monster Killer
Increasing Sequence with Fixed OR
Make Majority
Split the Multiset
Fumo Temple
Spinning Round (Hard Version)
Spinning Round (Easy Version)
Interesting Problem (Hard Version)
Interesting Problem (Easy Version)
Wonderful Tree!
World is Mine
Basil's Garden
K-Sort
Upload More RAM
Permutation Problem (Hard Version)
Permutation Problem (Simple Version)
Non-academic Problem
Mathematical Problem
Update Queries
Matrix Stabilization
X Axis
Maximize the Largest Component (Hard Version)
Maximize the Largest Component (Easy Version)
D-Function
Final Boss
Secret Box
Manhattan Circle
Good Prefixes
Maximum Multiple Sum
Creating Words
Tower Capturing
Magic Trick II
Reconstruction
Shuffle
''a'' String Problem
Magnitude (Hard Version)
Magnitude (Easy Version)
Large Addition
Strange Splitting
Your Loss
array-value
I Love Balls
Swap Dilemma
Have Your Cake and Eat It Too
Corner Twist
Array Divisibility
Sorting Problem Again
Number of k-good subarrays
Beauty of the mountains
Boring Day
Soccer
Turtle and Paths on a Tree
Turtle and Intersected Segments
Turtle and Multiplication
Turtle and an Incomplete Sequence
Turtle and an Infinite Sequence
Turtle and Piggy Are Playing a Game
Yasya and the Mysterious Tree
Field Division (hard version)
Field Division (easy version)
Permutation of Rows and Columns
GCD-sequence
Sofia and the Lost Operations
Choosing Cubes
Problem Generator
Kostyanych's Theorem
Manhattan Triangle
Fixing a Binary String
Earning on Bets
XOR Sequences
Guess the Maximum
Large Graph
Computing Machine
Elections
Manhattan Permutations
New Bakery
Alice and Books
Tensor
XORificator
Nikita and LCM
Binary Colouring
Little Nikita
Remove Bridges
Splittable Permutations
Invertible Bracket Sequences
Job Interview
Increase/Decrease/Copy
Verify Password
Mind Bloom
378QAQ and Core
Zimpha Fan Club
Chain Queries
Paint the Tree
Chamo and Mocha's Array
378QAQ and Mocha's Array
Bazoka and Mocha's Array
Money Buys Less Happiness Now
Cutting Game
Money Buys Happiness
Ingenuity-2
Beautiful Triple Pairs
Symmetric Encoding
Phone Desktop
Maximum GCD Sum Queries
Cat, Fox and Swaps
Cat, Fox and Maximum Array Split
Cat, Fox and Double Maximum
Cat, Fox and the Lonely Array
Chess For Three
Coin Games
Contest Proposal
±1
XOUR
Circle Perimeter
Find the Car
Binary Cut
Clock and Strings
Different String
My First Sorting Problem
Min-Fund Prison (Hard)
Min-Fund Prison (Medium)
Min-Fund Prison (Easy)
Playing Quidditch (Hard)
Playing Quidditch (Medium)
Playing Quidditch (Easy)
Trails (Hard)
Trails (Medium)
Trails (Easy)
Arithmancy (Hard)
Arithmancy (Medium)
Arithmancy (Easy)
Game on Tree (Hard)
Game on Tree (Medium)
Game on Tree (Easy)
Exact Neighbours (Hard)
Exact Neighbours (Medium)
Exact Neighbours (Easy)
Balanced Unshuffle (Hard)
Balanced Unshuffle (Medium)
Balanced Shuffle (Easy)
Card Pairing
Unique Array
Shop Game
Minimizing the Sum
Shifts and Sorting
Two Friends
Division + LCP (hard version)
Division + LCP (easy version)
Equal XOR Segments
Cells Arrangement
Permutation Game
Assembly via Remainders
Prefiquence
Maximize?
Next and Prev
Again Counting Arrays (Hard Version)
Again Counting Arrays (Easy Version)
Long Way to be Non-decreasing
Fenwick Tree
Reverse Card (Hard Version)
Reverse Card (Easy Version)
Permutation Counting
Rectangle Filling
Card Exchange
Conference
Connected Cubes
Missing Subarray Sum
Folding Strip
Missing Subsequence Sum
Everything Nim
Necromancer
Equal Trees
Composite Spells
Observation Towers
Narrow Paths
Yet Another Permutation Constructive
Staircase
Firewood
Clock in the Pool
1-3-5
Frequency Mismatch (Hard Version)
Frequency Mismatch (Easy Version)
Carousel of Combinations
A BIT of an Inequality
How Does the Rook Move?
A BIT of a Construction
Stickogon
Nene and the Passing Game
Nene vs. Monsters (Hard Version)
Nene vs. Monsters (Easy Version)
Nene and the Mex Operator
Nene's Magical Matrix
Nene and the Card Game
Nene's Game
The Most Reckless Defense
GCD on a grid
Unfair Game
Long Inversions
Inaccurate Subsequence Search
Inhabitant of the Deep Sea
Progressive Square
Yogurt Sale
Unique Strings
Chain Reaction
Colored Balls
Long Multiplication
Make It Ugly
Painting the Ribbon
Growing Trees
Thanos Snap
Clacking Balls
Inversion Composition
No Palindromes
Buying Jewels
Ticket Hoarding
Battle Cows
Dual Trigger
Shuffling Songs
0, 1, 2, Tree!
Nearly Shortest Repeating Substring
Product of Binary Decimals
Clock Conversion
Upscaling
Stair, Peak, or Neither?
Make Triangle
Amanda the Amoeba
Disks
Division Avoidance
Scooter
Dating
Damage per Second
Funny or Scary?
Annual Ants' Gathering
Charming Meals
Grove
MST with Matching
Rare Coins
Clique Partition
Tandem Repeats?
Arrow Path
Array Fix
Special Characters
Nobody is needed
Girl Permutation
Birthday Gift
Tree Cutting
Maximum Sum
Median of an Array
GCD is Greater
Cook and Porridge
Kirill and Mushrooms
Binary Search
Seraphim the Owl
Left and Right Houses
Fireworks
Setting up Camp
Equal XOR
Destroying Bridges
Minimum Hamming Distance
MEX Game 2 (Hard Version)
MEX Game 2 (Easy Version)
Counting Is Fun (Hard Version)
Counting Is Fun (Easy Version)
Tree Compass
Non-Palindromic Substring
MEX Game 1
Farmer John's Favorite Intern
Bessie and Cards
Farmer John's Favorite Function
Farm Game
Learning to Paint
Bessie's Birthday Cake (Hard Version)
Bessie's Birthday Cake (Easy Version)
Bessie and MEX
Farmer John's Challenge
Rudolf and Subway
Rudolf and Imbalance
Rudolf and k Bridges
Rudolf and the Ball Game
Rudolf and the Ugly String
Rudolf and 121
Rudolf and the Ticket
Zig-zag
XOR Operations
Tree Quiz
There and Back Again
Symmetric Boundary
Pho Restaurant
Personality Test
Forming Groups
Duplicates
Bánh Bò
Bit Counting Sequence
Attraction Score
Antiparticle Antiphysics
Binary Path
Shuffle Party
Grand Finale: Circles
Yet Yet Another Permutation Problem
Bitwise Paradox
Pokémon Arena
Bitwise Operation Wizard
Andrey's Tree
Distance Learning Courses in MAC
Exam in MAC
Messenger in MAC
Informatics in MAC
Entertainment in MAC
Weird LCM Operations
XOR Break --- Game Version
XOR Break --- Solo Version
Find a Mine
Yet Another Coin Problem
Too Min Too Max
Turtle Magic: Royal Turtle Shell Pattern
Turtle Mission: Robot and the Earthquake
Turtle vs. Rabbit Race: Optimal Trainings
Turtle Tenacity: Continual Mods
Turtle Fingers: Count the Values of k
Turtle Math: Fast Three Task
Turtle Puzzle: Rearrange and Negate
Moving Platforms
Feed Cats
Final Countdown
LR-remainders
Chaya Calendar
Thorns and Coins
One-Dimensional Puzzle
Chat Screenshots
Anna and the Valentine's Day Gift
Divisible Pairs
Make Equal Again
Make Equal
Recovering a Small String
Counting Is Fun
Interactive Mex Tree
Prefix Max Set Counting
Maximize the Difference
2..3...4.... Wonderful! Wonderful!
Sum over all Substrings (Hard Version)
Sum over all Substrings (Easy Version)
Lexicographically Largest
Permutation Printing
Maximise The Score
Sasha and the Wedding Binary Search Tree
Sasha and the Happy Tree Cutting
Sasha and a Walk in the City
Sasha and the Casino
Sasha and the Drawing
Sasha and the Beautiful Array
Digital Patterns
Modular Sequence
Lonely Mountain Dungeons
Physical Education Lesson
Equalize
Rectangle Cutting
Paint Charges
Microcycle
Klever Permutation
Find the Different Ones!
Choose the Different Ones!
Following the String
Make it White
Vlad and Trouble at MIT
Vlad and Avoiding X
Vlad and an Odd Ordering
Vlad and Division
Vlad and a Sum of Sum of Digits
Vlad and Shapes
Vlad and the Best of Five
Good Trip
A Balanced Problemset?
We Got Everything Covered!
Anti-Proxy Attendance
Paper Cutting Again
Balanced Subsequences
Fractal Origami
Space Harbour
Did We Get Everything Covered?
Shrink-Reverse
Count Paths
Slimes
Find B
Monsters Attack!
Moving Chips
Replace on Segment
Increasing Subsequences
Berserk Monsters
Closest Cities
Forming Triangles
Tricky Template
Mischievous Shooter
Sum of Progression
Eat the Chip
Very Different Array
Sending Messages
Arranging Cats
Square
Smooth Sailing (Hard Version)
Smooth Sailing (Easy Version)
Counting Binary Strings
Array Repetition
Partitioning the Array
Summation Game
Satisfying Constraints
Tree Diameter
Tree LGM
Wine Factory (Hard Version)
Wine Factory (Easy Version)
Counting Prefixes
01 Tree
Grouping Increases
Plus-Minus Split
Wallet Exchange
Permutation of Given
Caterpillar on a Tree
ace5 and Task Order
Blocking Elements
XOR-distance
Minimize Inversions
Brick Wall
Construct Tree
Construct Matrix
Yet Another Inversions Problem
Watering an Array
Erase First or Second Letter
Least Product
Matrix Rank (Hard Version)
Matrix Rank (Easy Version)
Optimizations From Chelsu
Group Division
Happy Life in University
Training Before the Olympiad
Two Divisors
2023
Bicycles
Greetings
Romantic Glasses
Unnatural Language Processing
Can I Square?
Not Quite Latin Square
Odd One Out
Light Bulbs (Hard Version)
Light Bulbs (Easy Version)
Programming Competition
Game with Marbles (Hard Version)
Game with Marbles (Easy Version)
Three Activities
Quests
Preparing for the Contest
Problemsolving Log
Palindromic Problem
Matrix Problem
Array Collapse
Game with Multiset
Swap and Delete
Rating Increase
LOL Lovers
Kim's Quest
Joy of Pokémon Observation
Innovative Washing Machine
Hypercatapult Commute
Great City Saint Petersburg
Fugitive Frenzy
Evaluate It and Back Again
Divisibility Test
Cactus Transformation
Blueprint for Seating
Accumulator Apex
Inverse Problem
Sum of Digits of Sums
Pool Records
Build Railway Stations
Maximum Sum Subarrays
Remove and Add
Poisonous Swamp
Security Guard
Username
Short Permutation Problem
Parallel Swaps Sort
Pumping Lemma
Small Permutation Problem (Hard Version)
Small Permutation Problem (Easy Version)
Multiple Lamps
Split Plus K
Heavy Intervals
Make Almost Equal With Mod
Distinct Buttons
Lights
Shift and Reverse
Good Triples
Jumping Through Segments
Removal of Unattractive Pairs
YetnotherrokenKeoard
Rook
Triangle Construction
Palindromic Parentheses
Deck-Building Game
Count BFS Graph
Contingency Plan 2
Twin Friends
Grid Game 2
Maximize The Value
Merge Not Sort
Spaceship Exploration
Cursed Game
Button Pressing
Easy As ABC
Field Should Not Be Empty
One-X
Cyclic MEX
Largest Subsequence
Begginer's Zelda
Constructive Problems
Tree Queries
Set To Max (Hard Version)
Set To Max (Easy Version)
Array Game
Collecting Game
Forked!
Babysitting
Geo Game
Maximum And Queries (hard version)
Maximum And Queries (easy version)
Theofanis' Nightmare
StORage room
Halloumi Boxes
Trees and XOR Queries Again
Collapsing Strings
Robot Queries
Insert and Equalize
Getting Points
Binary Imbalance
Landscaping
Compressed Tree
Yet Another Monster Fight
Add, Divide and Floor
Chip and Ribbon
Line Trip
Local Deletions
Transitive Graph
Small GCD
Anji's Binary Tree
Laura and Operations
Cover in Water
Unusual Entertainment
Alex's whims
Queue Sort
Yarik and Musical Notes
Yarik and Array
250 Thousand Tons of TNT
Game with Integers
Vova Escapes the Matrix
Sofia and Strings
Absolute Beauty
Colorful Grid
Milena and Admirer
Milica and String
Cyclic Hamming (Hard Version)
Cyclic Hamming (Easy Version)
Pepe Racing
Bracket Xoring
Permutation Sorting
Ones and Twos
Matching Arrays
AB Flipping
Jagged Swaps
Two Characters, Two Colors
Fancy Arrays
Infinite Card Game
XOR Construction
Torn Lucky Ticket
Points and Minimum Distance
Treasure Chest
Two Out of Three
Secret Sport
Cacti Symphony
Colorful Constructive
Freedom of Choice
Neutral Tonality
Anonymous Informant
A Growing Tree
Brukhovich and Exams
Suspicious logarithms
Smilo and Monsters
Deja Vu
Sorting with Twos
Qingshan Loves Strings
Doremy's Paint 3
Doremy's Average Tree
Doremy's Swapping Trees
Game of Stacks
Doremy's Drying Plan (Hard Version)
Doremy's Drying Plan (Easy Version)
Doremy's Connecting Plan
Qingshan Loves Strings 2
Minimum Segments
Good Colorings
Minimum Array
Time Travel
Diamond Theft
I Wanna be the Team Leader
Monocarp and the Set
Decreasing String
Fear of the Dark
Sum of Three
Hard Design
Counting Rhyme
Medium Design
Haunted House
Simple Design
Dances (Hard Version)
Dances (Easy version)
You Are So Beautiful
Look Back
In Love
Raspberries
Chemistry
Morning
Two Permutations (Hard Version)
Two Permutations (Easy Version)
Tree XOR
Sets and Union
Increasing Sequence
Anya and the Mysterious String
Minimum Maximum Distance
Block Sequence
Divide and Equalize
Perfect Square
Three Threadlets
Don't Try to Count
Last Man Standing
Interactive Game with Coloring
Sum of XOR Functions
Make it Alternating
Chips on the Board
Rigged!
wxhtzdy ORO Tree
Vasilije Loves Number Theory
Iva & Pav
Reverse Madness
Vasilije in Cacak
Aleksa and Stack
How Much Does Daytona Cost?
Joyboard
Goals of Victory
Clubstep
Indefinite Clownfish
Ball-Stackable
Lexichromatography
Autosynthesis
Effects of Anti Pimples
Helmets in Night Light
Jellyfish and Mex
Jellyfish and Green Apple
Jellyfish and Undertale
Jellyfish and Inscryption
Jellyfish and OEIS
Jellyfish and Hack
Jellyfish and Miku
Jellyfish and EVA
Jellyfish and Math
Jellyfish and Game
Mad City
ABBC or BACB
Money Trees
Building an Aquarium
1D Eraser
Target Practice
Good Kid
Short Sort
Replace With Product
Selling a Menagerie
Data Structures Fan
Plus Minus Permutation
Non-coprime Split
The Corridor or There and Back Again
Two Vessels
Standard Graph Problem
MEXanization
Lazy Numbers
Another MEX Problem
Prefix Purchase
Colorful Table
Friendly Arrays
MEXanized Array
2D Traveling
Make It Zero
LIS?
Min-Sum-Max
Flower-like Pseudotree
Travel Plan
Candy Party (Hard Version)
Candy Party (Easy Version)
Fill in the Matrix
Most Different Tree
Salyg1n and Array (hard version)
Salyg1n and Array (simple version)
Cyclic Operations
Salyg1n and the MEX Game
XOR Palindromes
green_gold_dog, array and permutation
Mighty Rock Tower
Lihmuf Balling
Keen Tree Calculation
Jackets and Packets
Imagination Castle
Happy Sets
Grouped Carriages
Freak Joker Process
Elevators of Tamem
Digital Wallet
Completely Searching for Inversions
Battling with Numbers
Ambitious Kid
Future Dominators
Asterism Stream
Magic Square
Exotic Queries
Guess Game
Matrix Cascade
Divisor Chain
Swap and Reverse
Increasing and Decreasing
Redundant Routes
Goldberg Machine 3
Swaps
Divide, XOR, and Conquer
Speedrun
Two-Colored Dominoes
MEX Repetition
Split Sort
Channel
The Great Equalizer
Magic Will Save the World
Kolya and Movie Theatre
Ice Cream Balls
Flower City Fence
Gift Carpet
Four Suits
Non-Intersecting Subpermutations
Sorting By Multiplication
Queries for the Array
Two Binary Strings
Prime Deletion
Evaluate RBS
Fast Travel Text Editor
Balanced String
Game on Permutation
Fancy Coins
Not a Substring
Teleportation in Byteland
Maximum Monogonosity
Andrey and Escape from Capygrad
Another Permutation Problem
Olya and Game with Arrays
United We Stand
Rollbacks (Hard Version)
Rollbacks (Easy Version)
Trees and Segments
Yet Another Permutation Problem
The Walkway
Buttons
Counting Graphs
Sum and Product
Power of Points
Strong Vertices
Assembly via Minimums
Maximum Rounding
Array Coloring
PermuTree (hard version)
PermuTree (easy version)
More Wrong
To Become Max
Good Arrays
Tales of a Sort
Longest Divisors Interval
Dalton the Teacher
Mark and Spaceship
Game Bundles
Michael and Hotel
Expected Destruction
Earn or Unlock
Dual (Hard Version)
Dual (Easy Version)
Fibonaccharsis
Desorting
Panda Meetups
Rivalries
Miriany and Matchstick
Ina of the Mountain
Imbalanced Arrays
Ntarsis' Set
Vlad and the Mountains
Lisa and the Martians
Nastya and Potions
Prefix Permutation Sums
Tiles Comeback
Parity Sort
Escalator Conversations
The Third Letter
The Morning Star
We Were Both Children
Cardboard for Pictures
Balanced Round
Word on the Paper
Ten Words of Wisdom
To My Critics
XOR Partition
Max to the Right of Min
Array Painting
Binary String Copying
Monsters
Morning Sandwich
Vika and Wiki
Vika and Stone Skipping
Vika and Bonuses
Vika and Price Tags
Vika and the Bridge
Vika and Her Friends
The Boss's Identity
Triangle Platinum?
Professor Higashikata
Vampiric Powers, anyone?
Hamon Odyssey
The Man who became a God
Rudolf and CodeVid-23
Rudolph and Mimic
Rudolf and Snowflakes (hard version)
Rudolf and Snowflakes (simple version)
Rudolph and Christmas Tree
Rudolf and the Another Competition
Rudolph and Tic-Tac-Toe
Rudolph and Cut the Rope
Swimmers in the Pool
Boxes and Balls
Rating System
Come Together
Forbidden Integer
Multiple of Three Cycles
Tree Weights
Min Cost Permutation (Hard Version)
Min Cost Permutation (Easy Version)
Great Grids
Row Major
Particles
Permutations & Primes
Subtraction Game
Omsk Metro (hard version)
Omsk Metro (simple version)
Tracking Segments
Apple Tree
Sum in Binary Tree
Long Long
Sasha and Array Coloring
Tenzing and Necklace
Tenzing and Random Real Numbers
Tenzing and Random Operations
Tenzing and Tree
Tenzing and Triangle
Tenzing and His Animal Friends
Tenzing and Balls
Tenzing and Books
Tenzing and Tsondu
Monocarp and a Strategic Game
Fill the Matrix
Pairs of Segments
Ranom Numbers
Keep it Beautiful
Game with Board
In Search of Truth (Hard Version)
In Search of Truth (Easy Version)
Railguns
Character Blocking
Wooden Toy Festival
Ski Resort
Binary Cafe
Cipher Shifer
Decreasing Game
Ball Sorting
Insert Zero and Invert Prefix
Lamps
The Good Array
Stuck Conveyor
Count Supersequences
Bracket Walk
No Prime Differences
Minimize Permutation Subarrays
Blackboard List
Editorial for Two
Playoff Fixing
Bracket Coloring
Best Binary String
Comparison String
Grasshopper on a Line
Astrophysicists
Destroyer
Good Graph
Old Mobile
Doctor's Brown Hypothesis
Twin Clusters
Lottery
k-th equality
Typewriter
MEX of LCM
Survey in Class
Game with Reversing
Maximum Strength
Unit Array
Ksyusha and Chinchilla
Ira and Flamenco
Round Dance
Flipper
Vlad Building Beautiful Array
Restore the Weather
Musical Puzzle
Zombies
Combinatorics Problem
Red-Blue Operations (Hard Version)
Red-Blue Operations (Easy Version)
Contrast Value
New Palindrome
Array merging
Twin Permutations
The Third Grace
Bully Sort
Mex Tree
Hyperregular Bracket Strings
The BOSS Can Count Pairs
Copil Copac Draws Trees
Don't Blame Me
Hits Different
Forever Winter
The Lakes
Gold Rush
Mr. Perfectly Fine
Blank Space
Love Story
Permutation Swap
Divisible Array
Copium Permutation
Bus Routes
Two Centroids
Palindrome Partition
Range Sorting (Hard Version)
Range Sorting (Easy Version)
Counting Orders
Fading into Fog
Walk the Runway
Running Miles
Dreaming of Freedom
Lunatic Never Content
Trust Nobody
LuoTianyi and the Table
LuoTianyi and the Palindrome String
LuoTianyi and Cartridge
LuoTianyi and the Function
LuoTianyi and XOR-Tree
LuoTianyi and the Floating Islands (Hard Version)
LuoTianyi and the Floating Islands (Easy Version)
LuoTianyi and the Show
Random Walk
Removing Graph
Unique Palindromes
Strongly Composite
Sort with Step
A-characteristic
Magic Triples (Hard Version)
Magic Triples (Easy Version)
Gardening Friends
Making Anti-Palindromes
Super-Permutation
Bun Lover
Karina and Array
TubeTube Feed
Timber
Rearrange Brackets
Tear It Apart
Sort the Subarray
Matching
JoJo's Incredible Adventures
Yura's New Name
Willy-nilly, Crack, Into Release!
Roads in E City
Misha and Apples
The Fox and the Complete Tree Traversal
The Butcher
Constructive Problem
Indivisible
Politics
Entangled Substrings
Half-sum
Toy Machine
Similar Polynomials
Fish Graph
Almost Increasing Subsequence
Grid Reconstruction
Ian Visits Mary
OH NO1 (-2-3-4)
Bosco and Particle
XOR Counting
Between
Sum Graph
Ian and Array Sorting
Communication Towers
Chain Chips
Balancing Weapons
Search in Parallel
Long Legs
Coins
Vlad and the Nice Paths (hard version)
Vlad and the Nice Paths (easy version)
Is It Flower?
Living Sequence
Umka and a Long Flight
Restore the Array
Conveyor Belts
Insert Digit
Last Number
The Maximum Prefix
M-tree
Climbing the Tree
Candies
Prediction
Traveling in Berland
Two Tanks
Binary String Sorting
Sum on Subarrays
Points on Plane
Garland
Minibuses on Venus (hard version)
Minibuses on Venus (medium version)
Minibuses on Venus (easy version)
Petya, Petya, Petr, and Palindromes
Unlucky Numbers
Playing in a Casino
Lucky Numbers
Subsequence Addition (Hard Version)
Subsequence Addition (Easy Version)
Bouncy Ball
Interview
Odd Queries
Find and Replace
Grab the Candies
Plus or Minus
GCD Master (hard version)
GCD Master (easy version)
Tree Master
DSU Master
Sequence Master
Mex Master
Walking Master
Survival of the Weakest (hard version)
Survival of the Weakest (easy version)
There Should Be a Lot of Maximums
A Wide, Wide Graph
Place for a Selfie
The String Has a Target
We Need the Zero
Code Lock
Flow Control
Approximate Diameter
Routing
Accommodation
Pull Your Luck
Vaccination
Lame King
Settlement of Guinea Pigs
Likes
A task for substrings
Another n-dimensional chocolate bar
Gasoline prices
The way home
Music Festival
Buying gifts
The Very Beautiful Blanket
Symmetree
Dasha and Nightmares
Unforgivable Curse (hard version)
Unforgivable Curse (easy version)
Remove Two Letters
Powering the Hero (hard version)
Powering the Hero (easy version)
Count the Number of Pairs
Is It a Cat?
Count Voting
Halve or Subtract
City Union
Hot Start Up (hard version)
Hot Start Up (easy version)
Double Lexicographically Minimum
Equalize by Divide
Recent Actions
Gifts from Grandfather Ahmed
Multitest Generator
Shocking Arrangement
Candy Store
Three Sevens
Showstopper
Li Hua and Path
Li Hua and Array
Li Hua and Tree
Li Hua and Chess
Li Hua and Pattern
Li Hua and Maze
Strange Triples
Colored Subgraphs
Maximum Subarray
Maximum Set
Asterisk-Minor Template
Typical Interview Problem
Removal Sequences
Blocking Chips
Explosions?
Triangle Coloring
Tea Tasting
Ideal Point
Two Towers
Labeling the Tree with Distances
Counting Factorizations
Scoring Subsequences
Not Dividing
Prefix and Suffix Array
Rebrending
Velepin and Marketing
Moscow Gorillas
Dora and Search
Fedya and Array
Yet Another Promotion
Graph Coloring (hard version)
Graph Coloring (easy version)
Divisors and Table
Fixed Prefix Permutations
Min Max Sort
Stand-up Comedian
GamingForces
Teleporters (Hard Version)
Teleporters (Easy Version)
Range Update Point Query
Negatives and Positives
Distinct Split
Prepend and Append
Following Directions
Codeforces Checking
Tokens on Graph
Timofey and Black-White Tree
Vlad and a Pair of Numbers
Matryoshkas
Premutation
Taisia and Dice
Polycarp and the Day of Pi
Serval and Brain Power
Serval and Music Game
Serval and Shift-Shift-Shift
Serval and Toxel's Arrays
Serval and Inversion Magic
Serval and Mocha's Array
XOR, Tree, and Queries
Sum Over Zero
Moving Dots
Matching Numbers
Sum of Two Numbers
One and Two
Codeforces Scoreboard
Colorful Tree Again
Inverse Transformation
The Harmonization of XOR
Game on Axis
Remove the Bracket
Number Factorization
Exponential Equation
Cake Assembly Line
Alternating Deck (hard version)
Non-alternating Deck (easy version)
Minimums or Medians
Infinite Game
Wooden Spoon
Monsters (hard version)
Letter Exchange
Monsters (easy version)
Weighed Tree Radius
Double Sort II
Game of the Year
Different Arrays
Yet Another Tournament
Matrix of Differences
Make it Beautiful
Window Signals (hard version)
Window Signals (easy version)
Diverse Coloring
Bracket Insertion
Rectangle Shrinking
Many Perfect Squares
Equal Frequencies
Going to the Cinema
Parallel Projection
Delicious Dessert
Three Chairs
Josuke and Complete Graph
Bit Guessing Game
GCD Partition
Hayato and School
Olympic Team Building
The Game of the Century
Xorcerer's Stones
Anya's Simultaneous Exhibition
Boris and His Amazing Haircut
Least Prefix Sum
MKnez's ConstructiveForces Task
Hall of Fame
Maximizing Root
The Tree Has Fallen!
Flexible String Revisit
Flexible String
The Forbidden Permutation
Flip Flop Sum
Comfortably Numb
Edge Reverse
Score of a Tree
Quiz Master
Emordnilap
Everybody Likes Good Arrays!
Count Permutations
Parmigiana With Seafood
Controllers
Uniform Chemistry
Italian Data Centers
Spinach Pizza
Beppa and SwerChat
Another Wine Tasting Event
Train Splitting
Crossing the Railways
Teamwork
Library game
Vittorio Plays with LEGO Bricks
Walking Boy
Laboratory on Pluto
The Human Equation
Friendly Spiders
Interesting Sequence
Gardener and the Array
Gardener and the Capybaras (hard version)
Gardener and the Capybaras (easy version)
Maximum Permutation
Segment Covering
Magician and Pigs (Hard Version)
Magician and Pigs (Easy Version)
Two Chess Pieces
Same Count One
Ice and Fire
Coloring
Add Plus Minus Sign
Lisa's Sequences
King's Puzzle
Jumbled Trees
Interactive Factorial Guessing
Hot and Cold
Game of Questions
Football
Easy Assembly
Dominoes
Cactus Meets Torus
BinCoin
Amazing Trick
Gaining Rating
Copy of a Copy of a Copy
Absolute Sorting
Different Differences
Matrix Rotation
A+B?
Hossam and Range Minimum Query
Hossam and a Letter
Hossam and (sub-)palindromic tree
Hossam and Trainees
Hossam and Friends
Hossam and Combinatorics
Koxia, Mahiru and Winter Festival
Koxia and Bracket
Koxia and Sequence
Koxia and Tree
Koxia and Game
Koxia and Number Theory
Koxia and Permutation
Koxia and Whiteboards
Игра в Девятку III
Игра в Девятку II
Игра в Девятку I
Подкрутка II
Подкрутка I
Копирование файлов II
Копирование файлов I
Узкая дорога
Wonderful Jump
Partial Sorting
Lucky Permutation
Elemental Decompress
Quick Sort
Greatest Convex
Two Subtrees
Algebra Flash
Playoff
Count Binary Strings
Block Towers
Cut the Triangle
MCF
Decomposition
Lucky Chains
Hamiltonian Wall
Notepad#
Extremely Round
Number Reduction
Minimum LCM
Project Manager
Torus Path
Hero to Zero
Infinite Chess
Hospital Queue
Guess the String
Chemistry Lab
Exchange
Watch the Videos
Card Guessing
Broken Keyboard
Access Levels
Doremy's Paint 2
Doremy's Perfect DS Class (Hard Version)
Doremy's Perfect DS Class (Medium Version)
Doremy's Perfect DS Class (Easy Version)
Doremy's Experimental Tree
Doremy's Number Line
Doremy's Pegging Game
Doremy's City Construction
Doremy's Perfect Math Class
Doremy's Paint
Edge Queries
Node Pairs
Valid Bitonic Permutations
Another Array Problem
Incinerate
Absolute Maximization
Unequal Adjacent Elements
Good Pairs
Tree Sum
GCD Queries
Binary Strings are Fun
Make Array Good
Divide and Conquer
Centroid Guess
Anti-median (Hard Version)
Anti-median (Easy Version)
Make It Connected
Carry Bit
Set Construction
Elimination of a Ring
Two Permutations
SlavicG's Favorite Problem
Binary Inversions
Challenging Valleys
Advantage
Atilla's Favorite Problem
Medium Number
Restore the Permutation
All Possible Digits
The Humanoid
Make It Round
Thermostat
Lost Permutation
Yes-Yes?
Decent Division
Tick, Tock
Range = √Sum
Almost All Multiples
XOR = Average
SSeeeeiinngg DDoouubbllee
Technical Support
Minecraft Series
N Machines
The Beach
Wish I Knew How to Sort
Factorial Divisibility
Make Nonzero Sum (hard version)
Make Nonzero Sum (easy version)
BinaryStringForces
Doping
Majority
Bracket Cost
Count GCD
Complementary XOR
Maximum Substring
Indirect Sort
Distance to the Path
Cactus Wall
Counting Arrays
Number Game
Death's Blessing
Cowardly Rooks
Circular Xor Reversal
Yet Another Array Counting Problem
ConstructOR
Zero-Sum Prefixes
Diverse Substrings
The Ultimate Square
List Generation
Yet Another Problem
Swap Game
BAN BAN
Two Groups
Olympiad Training
Kazaee
Joking (Hard Version)
Joking (Easy Version)
Paths on the Tree
Permutation Operations
Rebellion
Maxmina
MEX vs MED
Divisible Numbers (hard version)
Divisible Numbers (easy version)
Divisibility by 2^n
Traffic Light
Even-Odd Increments
Number Replacement
Antifibonacci Cut
Intersection and Union
FTL
Problem with Random Tests
Save the Magazines
Permutation Value
Password
Orray
Smaller
Scuza
Coprime
Stripes
Increasing
Sum
Kirill and Company
Multi-Colored Segments
Sending a Sequence Over the Network
Masha and a Beautiful Tree
Minimize the Thickness
Funny Permutation
Compare T-Shirt Sizes
Arranging Crystal Balls
MEX Tree Manipulation
Dangerous Laser Power
Conditional Mix
Hanging Hearts
Knowledge Cards
Bricks and Bags
Jumbo Extra Cheese 2
Factorise N+M
Keyboard Design
Cleaning Robot
Reset K Edges
Array Recovery
Immobile Knight
Palindrome Addicts
Anti-Increasing Addicts
Connectivity Addicts
Balance Addicts
Permutation Addicts
Even Number Addicts
Prefix Sum Addicts
Glory Addicts
Ela Takes Dancing Class
Ela and Prime GCD
Ela Goes Hiking
Ela and the Wiring Wizard
Ela and Crickets
Ela's Fitness and the Luxury Number
Ela Sorting Books
Swap and Take
Equal Binary Subsequences
Good Subarrays (Hard Version)
Good Subarrays (Easy Version)
Playing with GCD
Make A Equal to B
Pebbles and Beads
House Planning
Meta-set
Phase Shift
Tea with Tangerines
Working Week
Zeros and Ones
Rectangular Congruence
Slime Escape
Removing Smallest Multiples
Bright, Nice, Brilliant
Select Three Sticks
Conveyor
Zero-One (Hard Version)
Zero-One (Easy Version)
Parity Shuffle Sorting
Rule of League
Consecutive Sum
Location
Balance (Hard version)
Balance (Easy version)
Sheikh (Hard Version)
Sheikh (Easy version)
Ugu
Bestie
Function Sum
Graph Cost
Valiant's New Map
Even Subarrays
Kill Demodogs
Joey Takes Money
Almost Sorted
Maximums and Minimums
Prefixes and Suffixes
Minimum Notation
Meeting on the Line
Planets
Cut Substrings
Kirei and the Linear Function
Guess the Cycle Size
Friends and the Restaurant
Jumping on Tiles
Decode String
Two Elevators
Illumination
Fishermen
Red-Black Pepper
Letter Picking
Digital Logarithm
Best Permutation
Colored Balls: Revisited
Mainak and the Bleeding Polygon
A Certain Magical Party
Late For Work (submissions are not allowed)
Almost Perfect
Edge Split
Jatayu's Balanced Bracket Sequence
Mainak and Interesting Sequence
Mainak and Array
Moving Both Hands
Lemper Cooking Competition
Kingdom of Criticism
Imitating the Key Tree
Hot Black Hot White
Garage
Field Photography
Electrical Efficiency
Deducing Sortability
Circular Mirror
Basketball Together
Accumulation of Dominoes
Even-Odd XOR
L-shapes
Counting Rectangles
Line
Word Game
Colourblindness
Spell Check
Matching Reduction
Prefix Function Queries
Maximum AND
Min-Max Array Transformation
Deadly Laser
Image
Misha and Paintings
Xor-Subsequence (hard version)
Xor-Subsequence (easy version)
Corners
Interesting Sum
Burenka Plays with Fractions
Fighting Tournament
Mathematical Circus
Chip Game
Burenka, an Array and Queries
Impressionism
Permutation for Burenka
Tonya and Burenka-179
Fibonacci Strings
Burenka and Traditions (hard version)
Burenka and Traditions (easy version)
Madoka and The First Session
Madoka and The Best University
Madoka and The Corruption Scheme
Madoka and Formal Statement
Madoka and Underground Competitions
Madoka and Strange Thoughts
Bags with Balls
Swap and Maximum Block
Chip Move
Robot in a Hallway
Permutation Chain
2-3 Moves
Crop Squares
Long Way Home
2+ doors
Monoblock
Crossmarket
Path Prefixes
Build a Tree and That Is It
Add Modulo 10
Color with Occurrences
Minimum Varied Number
Remove Prefix
Everyone Loves to Sleep
Lost Array
Cross Swapping
Tournament Countdown
Build Permutation
Optimal Reduction
Traveling Salesman Problem
Triameter
LCM Sum (hard version)
LCM Sum (easy version)
Empty Graph
Sort Zero
Woeful Permutation
Wonderful Permutation
Party
Perfect Permutation
Recover the Tree
XOR Triangle
Rain
Color the Picture
Multiset of Strings
XOR Tree
Rorororobot
Recover an RBS
Also Try Minecraft
Three Doors
Difference of GCDs
Difference Operations
Bugaboo
Replace
Partial Virtual Trees
DFS Trees
Difference Array
Doremy's IQ
Qpwoeirut and Vertices
Chopping Carrots (Hard Version)
Chopping Carrots (Easy Version)
Qpwoeirut And The City
Making Towers
Another String Minimization Problem
Mark and the Online Exam
Mark and Professor Koro
Mark and Lightbulbs
Mark and His Unfinished Essay
Mark the Dust Sweeper
Mark the Photographer
Game of AI (hard version)
Game of AI (easy version)
Mio and Lucky Array
Colouring Game
Count Seconds
Magical Array
Virus
Luke is a Foodie
Two 0-1 Sequences
Good Key, Bad Key
Yet Another Problem About Pairs Satisfying an Inequality
Mirror Grid
Double Strings
Cypher
ICPC Balloons
YES or YES?
Passable Paths (hard version)
Passable Paths (easy version)
Equate Multisets
Split Into Two Sets
Not a Cheap String
Train and Queries
Polycarp Writes a String from Memory
Round Down the Price
Points
Text Editor
Permutation Restoration
Schedule Management
Permutation
Grass Field
Serega the Pirate
River Locks
Helping the Nature
Palindromic Numbers
Optimal Path
Three Days Grace
Almost Triple Deletions
The Third Problem
Almost Ternary Matrix
The Third Three Number Problem
Long Binary String
Equal Reversal
PermutationForces II
Fixed Point Guessing
3SUM Closure
Rising Sand
XOR Mixup
Too Many Constraints
Guess The String
awoo's Favorite Problem
Promo
Parkway Walk
Maximum Product?
Fishingprince Plays With Array Again
Tree Recovery
Placing Jinas
Permutation Graph
Fishingprince Plays With Array
NIT Destroys the Universe
NIT orz!
Ambiguous Dominoes
Tree Queries (Hard Version)
Tree Queries (Easy Version)
Zero Path
Circle Game
Subrectangle Guess
Paranoid String
Creep
I Might Be Wrong
Outermost Maximums
Decinc Dividing
Keshi in Search of AmShZ
Fake Plastic Trees
Directional Increase
Gambling
2^Sort
3SUM
Binary Deque
The Clock
Where's the Bishop?
All Distinct
Marathon
K-Set Tree
Number of Groups
Max GEQ Sum
Sum of Substrings
Shoe Shuffling
Beat The Odds
Count the Trains
Shifting String
Price Maximization
Black and White Stripe
Restoring the Duration of Tasks
Array Decrements
Print a Pedestal (Codeforces logo?)
ANDfinity
Lena and Matrix
Infected Tree
Mystic Permutation
Lex String
Manipulating History
Patchouli's Magical Talisman
Cirno's Perfect Bitmasks Classroom
Koishi's Unconscious Permutation
Become Big For Me
Cute number
Sanae and Giant Robot
Railway System
The Enchanted Forest
Odd Subarrays
Everything Everywhere All But One
The Ultimate LIS Problem
Permutation Weight (Hard Version)
Permutation Weight (Easy Version)
Bring Balance
Linguistics
Circular Local MiniMax
Hard Cut
Euclid Guess
Diverse Segments
MEX vs DIFF
Traps
Column Swapping
Z mod X = C
Digit Minimization
MCMF?
Unordered Swaps
Circular Spanning Tree
LIS or Reverse LIS?
AND Sorting
Palindromic Indices
Unique Occurrences
Labyrinth Adventures
Required Length
Double Sort
Card Trick
Game with Cards
Lenient Vertex Cover
Dog Walking
Binary String
Robots
Minimums and Maximums
Formalism for Formalism
Typical Party in Dorm
Toss a Coin to Your Graph...
Rooks Defenders
Stone Age Problem
AvtoBus
Tokitsukaze and Good 01-String (hard version)
Tokitsukaze and Good 01-String (easy version)
Tokitsukaze and All Zero Sequence
Tokitsukaze and Gems
Tokitsukaze and Beautiful Subsegments
Tokitsukaze and Permutations
Tokitsukaze and Two Colorful Tapes
Tokitsukaze and Meeting
Tokitsukaze and Strange Inequality
Maximum Crossings (Hard Version)
Maximum Crossings (Easy Version)
White-Black Balanced Subtrees
Longest Strike
Eating Queries
X-Sum
Most Similar Words
Equal Candies
Lucky?
Sorting Pancakes
Vlad and Unfinished Business
Replace With the Previous, Minimize
Vertical Paths
Detective Task
Make It Increasing
Food for Animals
Remove Directed Edges
Desktop Rearrangement
Breaking the Wall
A-B-C Sort
Infinite Replacement
Dictionary
Number Transformation
Anti-Theft Road Planning
Power or XOR?
Lost Arithmetic Progression
Palindrome Basis
A Perfectly Balanced String?
Subtle Substring Subtraction
PermutationForces
Zigu Zagu
Cross Xor
Checker for Array Shuffling
Array Shuffling
notepad.exe
Cyclic Rotation
Unequal Array
I love AAAB
Log Chopping
Preorder
Insert a Progression
Dolce Vita
Consecutive Points Segment
String Building
Jee, You See?
Hemose on the Tree
Very Suspicious
Where is the Pizza?
Dorms War
Prof. Slim
Maximal AND
Fall Down
Eating Candies
2-Letter Strings
Colorful Stamp
Odd/Even Increments
Triple
Division?
Social Distance
Direction Change
Yin Yang
Centroid Probabilities
Edge Elimination
Half Queen Cover
Optimal Partition
Make it Increasing
Labyrinth
Kingdom Partition
Job Lookup
Interactive Treasure Hunt
Heroes of Might
Global Warming
Fancy Stack
Even Split
Deletive Editing
Connect the Points
Budget Distribution
Admissible Map
MinimizOR
GCD Guess
Tree Infection
Array Cloning Technique
GCD vs LCM
Teleporters
Narrow Components
Progressions Covering
Water the Trees
Getting Zero
Array Balancing
Promising String (hard version)
Promising String (easy version)
Matrix and Shifts
Maximum Product Strikes Back
Get an Even String
Vlad and Candies
Vasya and Coins
Tree and Permutation Game
AND-MEX Walk
Reverse Sort Sum
Line Empire
Bit Flipping
Red Versus Blue
Juju and Binary String
Gojou and Matrix Game
388535 (Hard Version)
388535 (Easy Version)
Shinju and the Lost Permutation
Marin and Anti-coprime Permutation
Marin and Photoshoot
Words on Tree
Star MST
For Gamers. By Gamers.
Bracket Sequence Deletion
XY Sequence
Integer Moves
Neighbour Ordering
Equal LCM Subsets
Cycle Palindrome
Parametric MST
Equal Tree Sums
K-good
Make Equal With Mod
Subtract Operation
Three Minimums
Snowy Mountain
Minimal String Xoration
Arithmetic Operations
Potion Brewing Class
Alice and the Cake
Prefix Removals
Maximum Cake Tastiness
Tower Defense
Sum of Matchings
Nearest Excluded Points
Fault-tolerant Network
Prove Him Wrong
Counting Shortcuts
Vitaly and Advanced Useless Algorithms
Rescheduling the Exam
Twist the Permutation
Weight of the System of Nested Segments
DIV + MOD
Deletions of Two Adjacent Letters
Game of Ball Passing
Game
Two Avenues
Air Reform
Serious Business
Tyler and Strings
Integral Array
Weird Sum
Madoka and Laziness
Madoka and the Sixth-graders
Madoka and the Best School in Russia
Madoka and Childish Pranks
Madoka and the Elegant Gift
Madoka and Math Dad
Playing Around the Table
Power Board
Weight the Tree
Factorials and Powers of Two
Quality vs Quantity
Square Counting
Basis
Expand the Path
Cross Coloring
Increase Subarray Sums
Anti-Fibonacci Permutation
Doors and Keys
Power Walking
Hard Way
Covering Circle
Special Positions
Anonymity Is Important
Repetitions Decoding
Great Sequence
Two Posters
Colorful Operations
Big Brush
Inversion Graph
Odd Swap Sort
Reverse
Minimize Inversions Number
Towers
Best Pair
Yet Another Minimization Problem
Andrew and Stones
MEX and Array
Sorting Parts
Closest Pair
Cars
Infinite Set
Differential Sorting
Avoid Local Maximums
Min Or Sum
Fibonacci Additions
Fair Share
Finding Zero
OKEA
Fortune Telling
Reverse and Concatenate
Perfect Matching
Spanning Tree Queries
Make Them Equal
Kill the Monster
Minority
Div. 7
Distance Tree (hard version)
Distance Tree (easy version)
New Year Concert
Strange Test
Roof Construction
ABC
Fun with Even Subarrays
Min Max Swap
Making It Bipartite
Expected Components
Flipping Range
Paint the Middle
Range and Partition
And Matching
GCD Arrays
Download More RAM
Spaceship Crisis Management
Groceries in Meteor Town
Game on Sum (Hard Version)
Game on Sum (Easy Version)
Grid Xor
Peculiar Movie Preferences
Meximum Array
Not Splitting
Not Escaping
Not Adding
Not Assigning
Not Sitting
Not Shading
A Random Code Problem
Black and White Tree
Martial Arts Tournament
Monsters And Spells
Minor Reduction
Equidistant Letters
Cats on the Upgrade (hard version)
Cats on the Upgrade (easy version)
Binary Spiders
Road Optimization
Elementary Particles
Ancient Civilization
MinOr Tree
Interacdive Problem
Masha-forgetful
Palindromes Coloring
Division by Two and Permutation
Make AP
Plus One on the Subset
Middle Duplication
Robot Cleaner Revisit
Balanced Stone Heaps
Game on Ranges
Robot Cleaner
Quadratic Set
Math Test
Set or Decrease
Berland Music
Construct a Rectangle
Two Sequences
Trains and Airplanes
Weighted Increasing Subsequences
Strange Instructions
New School
The Winter Hike
Hidden Permutations
Integers Shop
Stable Arrangement of Rooks
Subsequences Galore
Bipartite Array
Replace the Numbers
Exact Change
BA-String
Triangles on a Rectangle
Equal or Not Equal
Permutation and Queries
Unusual Minesweeper
Let's Play the Hat?
MEX and Increments
New Year's Problem
Wrong Addition
Squares and Cubes
Square String?
Trader Problem
Singers' Tour
Array and Operations
Paint the Array
Missing Bigram
Polycarp and Sums of Subsequences
Christmas Chocolates
Too Many Impostors (hard version)
Too Many Impostors (easy version)
Paprika and Permutation
GCD Problem
Forbidden Subsequence
Keep XOR Low
Just Add an Edge
Tricolor Triangles
Lexicographically Small Enough
Keep the Average High
Representative Edges
Mirror in the String
Integer Diversity
Reindeer Games
Maximum Adjacent Pairs
LEGOndary Grandmaster
Purple Crayon
X(or)-mas Tree
Menorah
And It's Non-Zero
Closing The Gap
Divan and a Cottage
Divan and Kostomuksha (hard version)
Divan and Kostomuksha (easy version)
Divan and bitwise operations
Divan and a New Project
Divan and a Store
Tree Coloring
Crazy Robot
MEX Sequences
Poisoned Dagger
Absent Remainder
Long Comparison
Max Sum Array
Armor and Weapons
Messages
X-Magic Pair
Chat Ban
Special Permutation
Distance
Robot and Candies
ATM and Students
Escape The Maze (hard version)
Escape The Maze (easy version)
Weights Assignment For Tree Edges
Polycarp Recovers the Permutation
Team Composition: Programmers and Mathematicians
Make Even
Mashtali vs AtCoder
Squid Game
AmShZ Wins a Bet
Mashtali: a Space Oddysey
AmShZ and G.O.A.T.
Not Quite Lee
Keshi Is Throwing a Party
Kalindrome Array
Anti Light's Cell Guessing
Pushing Robots
A Stroll Around the Matrix
Interesting Sections
William The Oblivious
Social Network
Complex Market Analysis
William the Vigilant
Divide and Multiply
Alphabetic Tree
MEX counting
The Cells on the Paper
Game Master
Build the Permutation
Find Array
Banquet Preparations 2
Banquet Preparations 1
Robot on the Board 2
Robot on the Board 1
Blue-Red Permutation
Minimum Extraction
Odd Grasshopper
Linear Keyboard
Arena
Red-Blue Matrix
Banknotes
Update Files
AB Balance
PalindORme
Array Equalizer
Treelabeling
Dominant Character
Reverse Sort
A.M. Deviation
XOR Specia-LIS-t
Era
October 18, 2017
A Perfect Problem
Artistic Partition
Extreme Extension
Moderate Modular Mode
Di-visible Confusion
Divine Array
Two Subsequences
Two Sorts
Phys Ed Online
Difficult Mountain
Optimal Insertion
Frog Traveler
Array Elimination
Robot Factory
Party Organization
Bob's Beautiful Array
Desert
Hidden Fortress
Shortest path
Mars
Bubble Popping
Bubble Strike
Restaurant Game
Weights
The Sum of Good Numbers
RBS
Staircases
Training Session
Delete Two Elements
Groups
Computer Game
Ideal Farm
Rubik's Cube Coloring (hard version)
Rubik's Cube Coloring (easy version)
The Number of Imposters
Special Numbers
Consecutive Sum Riddle
Changing Brackets
Red-Black Number
Gardener and Tree
Half of Same
All are Same
Save More Mice
Make it Divisible by 25
Alice and Recoloring 2
Alice and Recoloring 1
Bored Bakry
Hemose in ICPC ?
Bakry and Partitioning
Hemose Shopping
Gamer Hemose
Jumping Through the Array
Omkar and Mosaic
Poachers
Non-equal Neighbours
Frequency Queries
Yet Another Sorting Problem
Minimize Distance
Array Eversion
Life of a Flower
Eligible Segments
Strange LCS
Game with Stones
Guess the Permutation
Coloring Rectangles
Mathematical Addition
Omkar and Tours
Omkar and Time Travel
Defender of Childhood Dreams
Moment of Bloom
Omkar and the Meaning of Life
Omkar and Determination
Omkar and Heavenly Tree
Windblume Ode
Kuzya and Homework
Korney Korneevich and XOR (hard version)
Korney Korneevich and XOR (easy version)
Pchelyonok and Segments
Vupsen, Pupsen and 0
Grandma Capa Knits a Scarf
Luntik and Subsequences
Luntik and Concerts
Diameter of Graph
CQXYM Count Permutations
Problems for Codeforces
Subsequence
Train Maintenance
Mathematics Curriculum
Portal
Minimal Coverage
Array Stabilization (AND version)
Array Optimization by Deque
Permutation Minimization by Deque
Productive Meeting
Ticks
Shifting Sort
Casimir's String Solitaire
The Mind
Kingdom of Islands
Just Kingdom
Interactive Rays
Higher Order Functions
Game of Chance
Framing Pictures
Easy Scheduling
Dragon Curve
Cactus Lady and her Cing
Building Forest Trails
Anti-Tetris
Managing Telephone Poles
Longest Array Deconstruction
Knitting Batik
Jeopardy of Dropped Balls
Illusions of the Desert
Holiday Wall Ornaments
GCD Festival
Finding Expected Value
Eye-Pleasing City Park Tour
Divisible by Twenty-Five
Cyclic Sum
Building an Amusement Park
Another Sorting Problem
Occurrences
The Strongest Build
Slay the Dragon
Combinatorics Homework
Regular Bracket Sequences
Countdown
Stations
Polygon
Bridge Club
Paint
Xor of 3
Book
Two Railroads
Physical Examination
Laser Beams
A Battle Against a Dragon
Kotlinforces
Fix the String
Sweepstake
Rhyme
Epic Novel
Sequence of Comparisons
Palindromic Hamiltonian Path
Playoff Restoration
Inconvenient Pairs
Jury Meeting
Chess Tournament
Balanced Substring
One-Four Overload
Non-Decreasing Dilemma
Expression Evaluation Error
Carrying Conundrum
MEXor Mixup
Domino Disaster
Xor-quiz
Four Vertices
Points Movement
Buds Re-hanging
Seating Arrangements (hard version)
Seating Arrangements (easy version)
MAX-MEX Cut
MIN-MEX Cut
Median Maximization
Tubular Bells
Rescue Niwen!
Two Hundred Twenty One (hard version)
Two Hundred Twenty One (easy version)
Rings
Scenes From a Memory
The Miracle and the Sleeper
Up the Strip (simplified version)
Deep Down Below
Simply Strange Sort
Nearest Beautiful Number (hard version)
Nearest Beautiful Number (easy version)
Polycarp and String Transformation
Make a Power of Two
Infinity Table
Who's Opposite?
Dislike of Threes
Mocha and Stars
Mocha and Diana (Hard Version)
Mocha and Diana (Easy Version)
Mocha and Hiking
Mocha and Red and Blue
Mocha and Math
Strange Sort
Down Below
Top-Notch Insertions
Bottom-Tier Reversals
Up the Strip
Charmed by the Game
Assiut Chess
Ezzat and Grid
Moamen and XOR
Moamen and k-subarrays
Ezzat and Two Subsequences
DIY Tree
Gates to Another World
Equilibrium
Take a Guess
Compressed Bracket Sequence
Take Your Places!
A Variety of Operations
Boring Segments
Say No to Palindromes
Coin Rows
Two Tables
PizzaForces
You
Diane
Mikasa
Cobb
Cherry
Stairs
XOR and Distance
Common Divisor Graph
Pairwise Modulo
Permutation Shift
Backspace
Penalty
Reverse String
Digits Sum
Organizing a Music Festival
Guess the Perimeter
A Serious Referee
Telepanting
Colors and Intervals
Array Differentiation
Maximize the Intersections
Running for Gold
Subsequence Permutation
Equidistant Vertices
Fixed Points
Domino (hard version)
Domino (easy version)
Interesting Story
Wonderful Coloring - 2
Wonderful Coloring - 1
Polycarp and Coins
Jumping Around
Stringforces
Excellent Arrays
Manhattan Subarrays
Maximum Cost Deletion
Find The Array
Gregor and the Pawn Game
Gregor and Cryptography
Gregor and the Two Painters
Gregor and the Odd Cows (Hard)
Gregor and the Odd Cows (Easy)
The Three Little Pigs
Integers Have Friends
Web of Lies
How Many Paths?
Array Stabilization (GCD version)
Air Conditioners
Co-growing Sequence
Pair Programming
Alphabetical Strings
Shortest Path with Obstacle
AquaMoon and Stolen String
AquaMoon and Two Arrays
AquaMoon and Potatoes
AquaMoon and Time Stop (hard version)
AquaMoon and Time Stop (easy version)
AquaMoon and Wrong Coordinate
AquaMoon and Permutations
AquaMoon and Chess
AquaMoon and Strange Sort
The Final Pursuit
RPD and Rap Sheet (Hard Version)
RPD and Rap Sheet (Easy Version)
Need for Pink Slips
Customising the Track
Exciting Bets
Abnormal Permutation Pairs (hard version)
Abnormal Permutation Pairs (easy version)
Priority Queue
Strange Function
Plus and Multiply
Odd Set
Pleasant Pairs
Pretty Permutations
Tasty Dishes
Inverse Inversions
Converging Array (Hard Version)
Converging Array (Easy Version)
Tree Array
Great Graphs
Strange Array
PriceFixed
Stable Groups
Love Song
Contest Start
Gift Set
Interesting Function
Funny Substrings
Another Problem About Dividing Numbers
Number of Pairs
Friends and Candies
Stone Game
Figure Fixing
Erase and Extend (Hard Version)
Erase and Extend (Easy Version)
Deleting Divisors
Challenging Cliffs
Bad Boy
Arithmetic Array
Omkar and Akmar
Omkar and Forest
Omkar and Medians
Diluc and Kaeya
Prinzessin der Verurteilung
Omkar and Bad Story
String Distance
Gold Transfer
Playoff Tournament
Unstable String
Array Reodering
Fair Playoff
Lost Nodes
A New Beginning
Falling Sand (Hard Version)
Falling Sand (Easy Version)
Lost Tree
Little Alawn's Puzzle
Histogram Ugliness
Colour the Flag
Turing's Award
What a Reversal
Bingo
Minimax
Secret Santa
Pursuit
Putting Plates
Binary Decimal
Sifid and Strange Subsequences
Eshag Loves Big Arrays
AmShZ Farm
Mashtali and Hagh Trees
It's a bird! No, it's a plane! No, it's AaParsa!
Trees of Tranquillity
Kavi on Pairing Duty
Parsa's Humongous Tree
Partition Game
MEX Tree
Sequence Pair Weight
Palindrome Game (hard version)
Palindrome Game (easy version)
And Then There Were K
Median Queries
Oolimry and Suffix Array
Kill Anton
Potions (Hard Version)
Potions (Easy Version)
I Hate 1111
Mean Inequality
Goblins And Gnomes
Assimilation IV
Armchairs
Robot Collisions
Permutation Sort
Potion-making
Hopping Around the Array
Try Booking
Favorite Game
Crypto Lights
Love-Hate
Compression and Expansion
Lord of the Values
Game of Life
Nastia and a Beautiful Matrix
Nastia Plays with a Tree
Nastia and a Hidden Permutation
Nastia and a Good Array
Nastia and Nearly Good Numbers
To Go Or Not To Go?
Guess the K-th Zero (Hard version)
Guess the K-th Zero (Easy version)
Arranging The Sheep
Same Differences
Not Adjacent Matrix
Ordinary Numbers
Do Not Be Distracted!
Chests and Keys
Off by One
Maximum Sum of Products
Berland Regional
The Cake Is a Lie
Red and Blue Beans
Fly Around the World
Starry Night Camping
Reunion
Group Photo
Explorer Space
Fillomino 2
Morning Jogging
Sum of 2050
Baby Ehab Plays with Permutations
Cut
Baby Ehab Partitions Again
AGAGA XOOORRR
Tit for Tat
Phoenix and Diamonds
Phoenix and Bits
Phoenix and Odometers
Phoenix and Earthquake
Phoenix and Computers
Phoenix and Socks
Phoenix and Towers
Phoenix and Puzzle
Phoenix and Gold
Baby Ehab's Hyper Apartment
Cut and Stick
Product 1 Modulo N
AND 0, Sum Big
Perfectly Imperfect Array
Swapping Problem
Cost Equilibrium
GCD and MST
Add One
AND Sequences
Array and Peaks
Short Task
Education
Permutation by Sum
Corrupted Array
A-B Palindrome
Almost Rectangle
Spy Detected!
Chips on a Board
Chainword
Colorings and Dominoes
Min Cost String
Yet Another Card Deck
GCD Length
Review Site
King's Task
Japanese Game
Is It Rated?
Hard Optimization
Guide
Fiber Shape
Equilibrium Point / extbackslash/ extbackslash
Cactus Not Enough
Button Lock
ASCII Automata Art
The Sports Festival
TMT Document
Average Height
Optimal Encoding
Tree Calendar
Swap Pass
Complete the MST
Binary Literature
Maximize the Remaining String
Triangular Paths
Restoring the Permutation
Epic Transformation
Double-ended Strings
Partial Replacement
Strange Table
Mysterious language again, seriously?
L BREAK into program
Encoded message
Math
Cakewalk
Xenolith? Hippodrome?
Fibonacci Words
DMCA
Is it rated - 2
Flip the Bits
Déjà Vu
Balance the Cards
2-Coloring
Flip the Cards
Travelling Salesman Problem
3-Coloring
Balance the Bits
Napoleon Cake
Alexey and Train
Cupboards Jumps
Subset Trick
Tiles for Bathroom
Matrix Sorting
Two chandeliers
Going Home
Graph Coloring
Diameter Cuts
Chaotic Merge
The Number of Pairs
Minimum Grid Path
Binary Removals
Domino on Windowsill
Christmas Game
Two Houses
Bananas in a Microwave
Planar Reflections
Box Fitting
GCD Sum
Square-Free Division (hard version)
Square-Free Division (easy version)
Genius
k-LCM (hard version)
k-LCM (easy version)
M-arrays
Meximization
Max and Mex
Split it!
Squares
Qingshan and Daniel
BFS Trees
Garden of the Sun
Let's Go Hiking
Diamond Miner
Delete The Edges
A-Z Graph
Dogeforces
1D Sokoban
Berland Crossword
ABC String
Enchanted Matrix
Enormous XOR
GCD of an Array
K-beautiful Strings
Planet Lapituletti
Anti-knapsack
Almost Fault-Tolerant Database
Genius's Gambit
Maximum width
Card Deck
Three swimmers
Ruler Of The Zoo
Yuezheng Ling and Dynamic Tree
Switch and Flip
Magnets
Fib-tree
Zookeeper and The Infinite Zoo
Pekora and Trampoline
Minimal Cost
K-th Largest Value
Old Floppy Drive
Equalize the Array
Accidental Victory
Permutation Transformation
Sum of Cubes
Balanced Remainders
Dense Array
Flower Shop
Demonic Invasion
Build From Suffixes
Painting Numbers
Dogecoin
Palindromic Doubles
Problemsolving Marathon
Two Policemen
RBS Deletion
From Zero To Y
String Counting
Ones
Cheap Dinner
Pythagorean Triples
Minimum Ties
Cat Cycle
Pairs of Paths
Paired Payment
Max Median
Guessing the Greatest (hard version)
Guessing the Greatest (easy version)
Eastern Exhibition
Shifting Stacks
Copy or Prefix Sum
Move and Swap
Multiples and Power Differences
Floor and Mod
Replace and Keep Sorted
Add and Divide
Exam
Vabank
Useful Edges
Skyline Photo
Playlist
Basic Diplomacy
Restore Modulo
Prison Break
AB Tree
Sorting Books
AB Graph
Fence Painting
New Colony
Space Navigation
The Great Hero
Yet Another String Game
School Clubs
Odd Mineral Resource
Continuous City
Painting the Array II
Painting the Array I
Searching Local Minimum
Nezzar and Symmetric Array
Nezzar and Lucky Number
Nezzar and Colorful Balls
Nezzar and Chocolate Bars
Nezzar and Tournaments
Nezzar and Hidden Permutations
Nezzar and Nice Beatmap
Nezzar and Binary String
Nezzar and Board
Minimum Difference
Lanterns
Pattern Matching
Longest Simple Cycle
Inflation
K-divisible Sum
Strange Beauty
Unusual Matrix
Advertising Agency
Cleaning the Phone
Ball in Berland
New Year's Number
Odd Divisor
1 2 3 4 ...
What Is It?
Cleaning
Array Destruction
Different Divisors
Puzzle From the Future
Tiles
Strange Set
Minimum Path
Program
No More Inversions
String LCM
Replacing Elements
Moving to the Capital
New Year's Puzzle
Correct Placement
Even-Odd Game
Long Jumps
Fair Division
Cards for Friends
Strange List
Strange Partition
Strange Covering
Strange Permutation
Strange Housing
Strange Shuffle
Strange Definition
Strange Birthday Party
Power Sockets
A Bit Similar
Ceil Divisions
Building a Fence
Red and Blue
Regular Bracket Sequence
Waste Sorting
Similar Sets
Prime Divisors Selection
The Robot
Road Reform
Plane Tiling
K and Medians
Hobbits
Full Turn
Four Segments
Firecrackers
Berpizza
Bakery
LaIS
Distinctive Roots in a Tree
Sum of Paths
Three Bags
Hills And Valleys
Wizard of Orz
The Riddle of the Sphinx
Finding satisfactory solutions
Song of the Sirens
Euclid's nightmare
Apollo versus Pan
13th Labour of Heracles
Canine poetry
Last minute enhancements
Bovine Dilemma
My Beautiful Madness
Max Correct Set
Plan of Lectures
Pairs
Busy Robot
The Treasure of The Segments
Close Tuples (hard version)
Close Tuples (easy version)
Add to Neighbour and Remove
Unique Number
Last Year's Substring
Favorite Sequence
Mathematical Expression
Water Level
Divide and Summarize
Random Events
Find the Spruce
String Generation
Move and Turn
Red-Blue Shuffle
Range Diameter Sum
Nim Shortcuts
Flip and Reverse
Latin Square
Glass Half Spilled
Row GCD
XOR-ranges
Forbidden Value
String and Operations
Four Points
Sequence and Swaps
Ping-pong
Jumps
Strange Functions
Array Partition
Number of Simple Paths
Number into Sequence
Sequence Transformation
Unique Bid Auction
Even Harder
Dog Snacks
Checkpoints
Triangles
Suffix Operations
Cancel the Trains
Game On Tree
Divide Powers
Two Editorials
Radio Towers
Two Brackets
Toy Blocks
Nullify The Matrix
Bitwise Queries (Hard Version)
Bitwise Queries (Easy Version)
String Equality
Non-Substring Subsequence
Subtract or Divide
Multithreading (Hard Version)
Multithreading (Easy Version)
Communism
The Struggling Contestant
Capitalism
Rating Compression
Errich-Tac-Toe (Hard Version)
Errich-Tac-Toe (Easy Version)
Balls of Steel
Avoid Trygub
Numbers Box
Add Candies
Line Distance
Long Recovery
Frequency Problem (Hard Version)
Frequency Problem (Easy Version)
Xor Tree
Catching Cheaters
Knapsack
Elimination
Array Rearrangment
Finding the Vertex
Rectangular Polyline
Team-Building
Divide and Sum
Division
Long Permutation
The Delivery Dilemma
Saving the City
Kids Seating
Differentiating Games
Black, White and Grey Tree
Graph Transpositions
Identify the Operations
Extreme Subtraction
Sum of Medians
Buy the String
Cheat and Win
INOI Final Contests
Greedy Shopping
Graph Subset Problem
Binary Table (Hard Version)
Binary Table (Easy Version)
Olha and Igor
Yurii Can Do Everything
Powerful Ksenia
Engineer Artem
Valerii Against Everyone
Specific Tastes of Andre
Death DBMS
Emotional Fishermen
Minimal Height Tree
Chef Monocarp
Reverse Binary Strings
Marketing Scheme
Sum Over Subsets
Complicated Computations
Bandit in a City
Prime Square
Reorder
A Convex Game
Reducing Delivery Cost
Zero Remainder Sum
Two Round Dances
Districts Connection
Dominant Piranha
Yet Another Bookshelf
Boring Apartments
Zero-XOR Array
Cyclic Shifts
Rogue-like Game
Number Deletion Game
Neural Network Problem
Chess Match
Used Markers
Black Friday
Polycarp and the Language of Gods
Selling Hamburgers
Yet Another DAG Problem
Realistic Gameplay
String Reversal
String Deletion
Numbers on Whiteboard
Number of Apartments
Rotary Laser Lock
Lucky Numbers (Hard Version)
Lucky Numbers (Easy Version)
Fruit Sequences
Carrots for Rabbits
Bouncing Boomerangs
ABBB
Belted Rooms
Box is Pull
One Billion Shades of Grey
Boring Card Game
Xum
Unshuffling a Deck
The Hard Work of Paparazzi
Chess Cheater
Avoiding Zero
Number of Subsequences
Rock, Paper, Scissors
Non-zero Segments
Increase and Copy
Symmetric Matrix
Floor Number
Impressive Harvesting of The Orchard
Huge Boxes of Animal Toys
Flamingoes of Mystery
Excitation of Atoms
Danger of Mad Snakes
Captain of Knights
Blue and Red of Our Faculty!
Arena of Greed
Ancient Language
Years
BubbleSquare Tokens
Milutin's Plums
Light switches
Lonely Numbers
Bubble Cup hypothesis
Lookup Tables
Growing flowers
5G Antenna Towers
Does anyone else hate the wind?
Dušan's Railway
Valuable Paper
Wakanda Forever
Boring Queries
Minlexes
Returning Home
Bargain
Nice Matrix
Fence
Swedish Heroes
Hexagons
Palindromifier
Putting Bricks in the Wall
XORwice
Battle Lemmings
Rescue Nibel!
Pokémon Army (hard version)
Pokémon Army (easy version)
Rock and Lever
Cubes Sorting
Rain of Fire
Decryption
Sage's Birthday (hard version)
Sage's Birthday (easy version)
Killjoy
Digit Game
Three Occurrences
Equal Product
Expected Damage
Trash Problem
Mortal Kombat Tower
Negative Prefixes
Buying Torches
Copy-paste
Showing Off
Graph and Queries
XOR Inverse
k-Amazing Numbers
Cakes for Clones
New Game Plus!
XOR-gun
Bouncing Ball
Repainting Street
Roads and Ramen
Solo mid Oracle
Shurikens
Perform Easily
A New Technique
Finding Sasuke
No Game No Life
The Thorny Path
Poman Numbers
Grime Zoo
Peaceful Rooks
Fair Numbers
In-game Chat
Subsequences of Length Two
Two Platforms
Decrease the Sum of Digits
Yet Another Array Restoration
Minimum Product
Yet Another Two Integers Problem
Bitwise Magic
Rainbow Triples
Clusterization Counting
Two Different
Avoid Rainbow Cycles
Searchlights
Discrete Acceleration
Arrays Sum
Circle Coloring
Egor in the Republic of Dagestan
Discrete Centrifugal Jumps
Chocolate Bunny
Big Vova
Ahahahahahahahaha
Deleting Numbers
Three Sequences
Link Cut Centroids
Maximum Product
Subset Mex
Array Cancellation
Permutation Forgery
Bricks
Game of Pairs
Fixed Point Removal
Tree Tag
Balanced Bitstring
Chess Rush
Spring cleaning
The Potion of Great Power
Star Trek
Roads
Fancy Fence
Reverse and Swap
Divide Square
Maximum Distributed Tree
Mere Array
Ternary Sequence
Distance and Axis
Mercenaries
x-prime Substrings
Clear the Multiset
Zigzags
Binary String Reconstruction
RPG Protagonist
String Similarity
Yet Another Segments Subset
Weights Division (hard version)
Weights Division (easy version)
Binary String To Subsequences
Boats Competition
Gifts Fixing
Remove Smallest
Running Competition
Controversial Rounds
Two Types of Spells
Colored Rectangles
Good Subarrays
Substring Removal Game
Bad Triangle
Power Sequence
Juggling Letters
Distance Matching
Rainbow Rectangles
Monster Invaders
Stoned Game
Multiples of Length
Boboniu and Bit Operations
Boboniu Plays Chess
Boboniu Likes to Color Balls
Boboniu and Banknote Collection
Boboniu and Jianghu
Boboniu and String
Boboniu Walks on Graph
Boboniu Chats with Du
Twilight and Ancient Scroll (harder version)
Twilight and Ancient Scroll (easier version)
Rarity and New Dress
Pinkie Pie Eats Patty-cakes
Applejack and Storages
Rainbow Dash, Fluttershy and Chess Coloring
Kevin and Grid
ZS Shuffles Cards
Omkar and Pies
Omkar and Landslide
Omkar and Duck
Omkar and Bed Wars
Omkar and Waterslide
Omkar and Infinity Clock
Omkar and Password
Pairs of Pairs
505
Cyclic Permutations
Fix You
Suborrays
Directing Edges
Bicolored Segments
Calendar Ambiguity
Segment Intersections
Good String
Array Walk
LCM Problem
Uncle Bogdan and Projections
Captain Flint and Treasure
Uncle Bogdan and Country Happiness
Captain Flint and a Long Voyage
Captain Flint and Crew Recruitment
Viruses
Village (Maximum)
Village (Minimum)
Graph
Mixture
Colors
Columns Swaps
Removing Leaves
a-Good String
Make It Good
Restore the Permutation by Merger
Three Pairwise Maximums
Koa and the Beach (Hard Version)
Koa and the Beach (Easy Version)
Common Prefixes
Special Edges
Strange Operation
Rearrange
String Transformation 2
GameGame
String Transformation 1
Sequential Nim
Common Subsequence
Origami
The Majestic Brown Tree Snake
Mastermind
Unmerge
Prefix Flip (Hard Version)
Prefix Flip (Easy Version)
Circular Dungeon
Strange Addition
Merging Towers
Berserk And Fireball
Create The Teams
Universal Solution
Three Indices
Chess Strikes Back (hard version)
Chess Strikes Back (easy version)
Inverse Genealogy
New Passenger Trams
Choosing flowers
Dubious Cyrpto
Acacius and String
Cubic Lattice
Set Merging
Tree Modification
Integer Game
Inversion SwapSort
Replace by MEX
Element Extermination
Neighbor Grid
Sign Flipping
Cyclic Shifts Sorting
Reading Books (hard version)
Reading Books (easy version)
Zero Remainder Array
Move Brackets
Multiply by 2, divide by 6
Required Remainder
Pawns
Network Coverage
Sum of Digits
Maximum Sum on Even Positions
Pluses and Minuses
01 Game
Donut Shops
Omkar and Modes
Omkar and Last Floor
Omkar and Circle
Omkar and Baseball
Omkar and Last Class of Math
Omkar and Completion
Raging Thunder
Asterism (Hard Version)
Asterism (Easy Version)
Grid-00100
A Cookie for You
Magical Calendar
Magical Sticks
The Hidden Pair (Hard Version)
The Hidden Pair (Easy Version)
Binary Subsequence Rotation
Odd-Even Subsequence
GCD Compression
Maximum GCD
BareLee
DeadLee
TediousLee
RationalLee
AccurateLee
FashionabLee
Breadboard Capacity (hard version)
Breadboard Capacity (easy version)
Shifting Dominoes
Lamps on a Circle
Ski Accidents
AND, OR and square sum
Even Picture
Codeforces Subsequences
C+=
Flying Sort (Hard Version)
Flying Sort (Easy Version)
Necklace Assembly
Task On The Board
Even Array
Short Substrings
Construct the String
Jog Around The Graph
Palindromic Paths
Shovels and Swords
Secure Password
Swaps Again
Maximum Subsequence Value
Solve The Maze
Rotation Matching
Trouble Sort
Matrix Game
X-OR
Ehab's Last Corollary
Ehab and Prefix MEXs
Most socially-distanced subsequence
XXXXX
Rotating Substrings
Tree Shuffling
Guess The Maximums
Game On Leaves
Subsequence Hate
Odd Selection
Johnny and Another Rating Drop
Johnny and His Hobbies
Johnny and Ancient Computer
Johnny and New Toy
James and the Chase
Johnny and James
Johnny and Megan's Necklace
Johnny and Grandmaster
Johnny and Contribution
Binary Median
A/B Matrix
Spy-string
Buying Shovels
Similar Pairs
Honest Coach
Minimal Square
RC Kaboom Show
Modular Stability
Yet Another Yet Another Task
Mixing Water
New Theatre Square
Berland Poker
Tasty Cookie
Are You Fired?
The Best Vacation
Celex Update
Maria Breaks the Self-isolation
Park Lighting
Guess Divisors Count
Restorer Distance
Game With Array
Count Triangles
Young Explorers
Sequence with Digits
Find a Gift
Summoning Minions
Multiset
Not So Simple Polygon Embedding
Simple Polygon Embedding
Ternary String
Alarm Clock
Decreasing Heights
K-periodic Garland
Constructing the Array
Board Moves
Two Arrays And Swaps
Most Unstable Array
Special Elements
Alice, Bob and Candies
K-th Not Divisible by n
Same Parity Summands
Sum of Round Numbers
Skier
A+B (Trial Problem)
Orac and Models
Orac and Factors
Slime and Sequences (Hard Version)
Slime and Sequences (Easy Version)
Slime and Hats
Slime and Biscuits
Orac and Game of Life
Orac and Medians
Orac and LCM
Phoenix and Memory
Phoenix and Berries
Phoenix and Science
Phoenix and Distribution
Phoenix and Beauty
Phoenix and Balance
Pac-Man 2.0
Game with Segments
Two IP Cameras
Dune II: Battle For Arrakis
Magic Tricks
Constructing the Dungeon
Spring Cleaning
Boot Camp
Color Revolution
Card Constructions
Puzzle Pieces
Piet's Palette
Train Tracks
Résumé Review
Quantifier Question
Monopole Magnets
Hilbert's Hotel
Restore the Permutation by Sorted Segments
Weights Distributing
Constant Palindrome Sum
Alternating Subsequence
Balanced Array
Make It Ascending
Placing Rooks
Multiple Testcases
Yet Another Counting Problem
Binary Period
Road To Zero
Nastya and Door
Nastya and Rice
Nastya and CBS
Nastya and Bees
Nastya and Time Machine
Nastya and Unexpected Guest
Nastya and Scoreboard
Nastya and Strange Generator
Sorted Adjacent Differences
Filling Diamonds
JYPnation
Nested Rubber Bands
Perfect Triples
Edge Weight Assignment
Powered Addition
Kana and Dragon Quest game
Ichihime and Triangle
Chiori and Doll Picking (hard version)
Chiori and Doll Picking (easy version)
Yui and Mahjong Set
Kaavi and Magic Spell
Xenia and Colorful Gems
Linova and Kingdom
Robots on a Grid
Three Blocks Palindrome (hard version)
Three Blocks Palindrome (easy version)
Anti-Sudoku
Two Teams Composing
Candies and Two Sisters
Substring Search
Divisor Paths
Minimum Euler Cycle
Circle of Monsters
Middle Class
Level Statistics
Kate and imperfection
Road to 1600
Challenges in school №41
Eugene and an array
Kind Anton
Little Artem
No Monotone Triples
Independent Set
Height All the Same
Walk on Matrix
K-Complete Word
Composite Coloring
Exercising Walk
Dreamoon Likes Permutations
Dreamoon and Ranking Collection
Dreamoon Loves AA
Dreamoon Likes Strings
Drazil Likes Heap
Dreamoon Likes Sequences
Dreamoon Likes Coloring
Make k Equal
Carousel
Ternary XOR
K-th Beautiful String
Divisibility Problem
Letters and Question Marks
AND Segments
Count The Blocks
Infinite Path
Game with Chips
Princesses and Princes
Sum of Odd Integers
Spiderweb Trees
Wise Men (Hard Version)
Wise Men (Easy Version)
Bombs
Prefix-Suffix Palindrome (Hard version)
Prefix-Suffix Palindrome (Easy version)
Permutation Partitions
Maximums
Bad Ugly Numbers
Ehab's Last Theorem
Ehab's REAL Number Theory Problem
Ehab the Xorcist
Ehab and Path-etic MEXs
CopyCopyCopyCopyCopy
EhAb AnD gCd
Maximum White Subtree
Sleeping Schedule
Pair of Topics
Frog Jumps
Yet Another Palindrome Problem
Yet Another Tetris Problem
Count Subrectangles
Even Subset Sum Problem
Assigning Fares
Median Mountain Range
Reality Show
Instant Noodles
Present
Unusual Competitions
Remove Adjacent
Contest for Robots
Blocks and Sensors
Treeland and Viruses
Reachable Strings
World of Darkraft: Battle for Azathoth
Navigation System
Journey Planning
Battalion Strength
Team Building
Nash Matrix
Primitive Primes
String Modification
Grade Allocation
Restoring Permutation
Homecoming
Dead Pixel
Concatenation with intersection
Happy New Year
Skyscrapers (hard version)
Skyscrapers (easy version)
Different Rules
Fast Food Restaurant
Autocompletion
Attack on Red Kingdom
Array Shrinking
Count the Arrays
Adding Powers
Bogosort
Two Regular Polygons
Moving Points
Construct the Binary Tree
Three Integers
Perform the Combo
WeirdSort
Add Odd or Subtract Even
Bad Cryptography
Tourism
Au Pont Rouge
Double Elimination
Cow and Exercise
Cow and Vacation
Cow and Treats
Cow and Fields
Cow and Message
Cow and Friend
Cow and Haybales
Kuroni the Private Tutor
Kuroni and Antihype
Kuroni and the Punishment
Kuroni and the Score Distribution
Kuroni and the Celebration
Kuroni and Impossible Calculation
Kuroni and Simple Strings
Kuroni and the Gifts
Animal Observation (hard version)
Animal Observation (easy version)
1-Trees and Queries
Shortest and Longest LIS
Air Conditioner
Longest Palindrome
Two Rabbits
Sum of Prefix Sums
Number of Components
Erase Subsequences
Fill The Bag
Perfect Keyboard
National Project
Erasing Zeroes
Super Jaber
Nanosoft
Time to Run
Ayoub's function
Motarack's Birthday
Assigning to Classes
Non-zero
So Mean
Around the World
Water Balance
Aerodynamic
Anu Has a Function
Berland Beauty
String Coloring (hard version)
String Coloring (easy version)
Fight with Monsters
Yet Another Walking Robot
Food Buying
Array with Odd Sum
Good Contest
Permutation Separation
Same GCDs
Obtain The String
Infinite Prefixes
Display The Number
Three Paths on a Tree
Obtain a Permutation
MEX maximizing
Product of Three Numbers
Collecting Packages
Collecting Coins
JOE is on TV!
ConneR and the A.R.C. Markland-N
Nora's Toy Boxes
Rin and The Unknown Flower
Chaotic V.
Xenon's Attack on the Gangs
Aroma's Search
NEKO's Maze Game
Coffee Varieties (easy version)
Array Sharpening
Even But Not Even
Making Shapes
Cartesian Tree
Coffee Varieties (hard version)
Prefix Enlightenment
Irreducible Anagrams
Mind Control
Red-Blue Graph
Messenger Simulator
Minimax Problem
Yet Another Meme Problem
Deadline
Hyperset
Angry Students
Harry The Potter
Fedya the Potter Strikes Back
LCC
Madhouse (Hard version)
Madhouse (Easy version)
Numbers on Tree
Classical?
Delete a Segment
Dr. Evil Underscores
Fadi and LCM
Just Eat It!
Mezo Playing Zoma
Seollal
New Year and Social Network
New Year and Castle Construction
New Year and Conference
New Year and Permutation
New Year and Ascent Sequence
New Year and Naming
DIY Garland
New Year Parties
Christmas Trees
Friends and Gifts
Candies Division
Minutes Before the New Year
Enchanted Artifact
Petya and Exam
K for the Price of One (Hard Version)
K for the Price of One (Easy Version)
Temporarily unavailable
Azamon Web Services
Suffix Three
Intergalactic Sliding Puzzle
Kirchhoff's Current Loss
Miss Punyverse
Jeremy Bearimy
Beingawesomeism
Cut and Paste
New Year and Handle Change
New Year Permutations
Santa's Bot
Stack of Presents
Verse For Santa
New Year Garland
Cards
Tests for problem D
Segment Tree
Berry Jam
Shuffle Hashing
Let's Play the Words?
Make Them Odd
Happy Birthday, Polycarp!
Asterisk Substrings
Four Stones
Tree Elimination
Beautiful Rectangle
Two Fairs
As Simple as One and Two
Two Bracket Sequences
Nearest Opposite Parity
Remove One Element
Yet Another Broken Keyboard
Snow Walking Robot
Three Friends
Divide The Students
Common Number
Portals
Shawarma Tent
Blocks
Suits
Xor on Figures
Subset with Zero Sum
Awesome Substrings
Divide Points
Strange Device
Interesting Subarray
Modulo Equality
Equation
Happy Cactus
Invertation in Tournament
K Integers
Domino for Young
Long Beautiful Integer
Lexicography
Key Storage
Just Arrange the Icons
Intriguing Selection
Help BerLine
Game Relics
Foolprüf Security
DevOps Best Practices
Cactus Revenge
Balls of Buma
Apprentice Learning Trajectory
Permutation Concatenation
Almost Same Distance
Spaceship Solitaire
Decreasing Debts
Diverse Matrix
Dice Tower
Competitive Programmer
Beautiful Mirrors
Beautiful Numbers
Beautiful Fibonacci Problem
Beautiful League
Beautiful Bracket Sequence (hard version)
Beautiful Bracket Sequence (easy version)
Beautiful Mirrors with queries
Beautiful Regional Contest
Economic Difficulties
Editor
Secret Passwords
Everyone is a Winner!
PIN Codes
Sweet Problem
Xor-Set
Colored Tree
A Game with Traps
Infinite Fence
Obtain Two Zeroes
Heating
Divisor Set
Make Them Similar
The Contest
Yet Another Monster Killing Problem
Dominated Subarray
Magic Stick
Two Rival Students
Equalizing Two Strings
Yet Another Division Into Teams
Binary String Minimizing
Platforms Jumping
Minimize the Permutation
Payment Without Change
League of Leesins
Fridge Lockers
Changing Volume
Send Tree to Charlie
Point Ordering
Send Boxes to Alice (Hard Version)
Send Boxes to Alice (Easy Version)
Feeding Chicken
Cheap Robot
Antenna Coverage
Harmonious Graph
Sweets Eating
Silly Mistake
Single Push
Road Construction
Addition Robot
Tiling Terrace
Mission Possible
Twin Buildings
Performance Review
Regular Forestation
Songwriter
Find String in a Grid
Even Path
Cleaning Robots
Copying Homework
Red-White Fence
Voting (Hard Version)
Voting (Easy Version)
Salary Changing
Minimize The Integer
Binary Palindromes
Wires
SmartGarden
Projectors
The Parade
Show Must Go On
Happy Birthday
Discarding Game
Data Center
The Coronation
Conference Problem
Trip to Saint Petersburg
The Feast and the Bus
Berstagram
Maximum Weight Subset
By Elevator or Stairs?
Too Many Segments (hard version)
Too Many Segments (easy version)
Good Numbers (hard version)
Good Numbers (easy version)
Books Exchange (hard version)
Books Exchange (easy version)
Yet Another Dividing into Teams
The World Is Just a Programming Task (Easy Version)
Grow The Tree
Integer Points
Cursor Distance
Daniel and Spring Cleaning
Hyakugoku and Ladders
Shichikuji and Power Grid
Constanze's Machine
Restricted RPS
Good ol' Numbers Coloring
Running in Pairs
Chips
Minimizing Difference
The Football Season
Rooms and Staircases
Pens and Pencils
Character Swap (Hard Version)
Character Swap (Easy Version)
Maximum Square
Planar Perimeter
Number Discovery
Sum Balance
0-1 MST
Tile Painting
Swiper, no swiping!
Turtle
Catowice City
Queue in the Train
The World Is Just a Programming Task (Hard Version)
Ivan the Fool and the Probability Theory
Adilbek and the Watering System
The Maximum Subtree
Keyboard Purchase
AB-string
Standard Free2play
Kill `Em All
Prime Subtraction
Balanced Reversals
Balanced Distribution
Balanced Domino Placements
Balanced Binary Search Trees
Balanced Playlist
Balanced Removals (Harder)
Balanced Removals (Easier)
Balanced Tunnel
Balanced Rating Changes
Alice and the Cactus
Alice and the Unfair Game
Alice and the Doll
Labs
Alice and the List of Presents
Stones
Yet Another Substring Reverse
Special Permutations
Distinct Characters Queries
Pipes
Social Network (hard version)
Social Network (easy version)
Equalize Prices Again
Middle-Out
Increasing Matrix
Ania and Minimizing
Dawid and Bags of Candies
One Node is Gone
Another Filling the Grid
Complete Tripartite
Primes and Multiplication
Filling the Grid
Distinct Digits
Not Same
Wrong Answer on test 233 (Hard Version)
Wrong Answer on test 233 (Easy Version)
Arson In Berland Forest
Optimal Subsequences (Hard Version)
Optimal Subsequences (Easy Version)
Messy
Box
Math Problem
To Make 1
Tree Factory
Rock Is Push
Power Products
p-binary
TV Subscriptions (Hard Version)
TV Subscriptions (Easy Version)
Forgetting Things
Wooden Raft
Stack Exterminable Arrays
Sequence Sorting
Save the Nature
Strings Equalization
CME
Graph And Numbers
Choose a Square
Game With String
Make The Fence Great Again
Perfect Team
Knights
2048 Game
Geolocation
Gardener Alex
Alex and Julian
Substring Game in the Lesson
Multiplication Table
Harvester
Periodic integer number
The Light Square
Function Composition
Alpha planetary system
Workout plan
Product Tuples
Xor Spanning Tree
Jumping Transformers
Guarding warehouses
BubbleReactor
Forced Online Queries Problem
Sum Queries?
Coloring Edges
The Number Of Good Substrings
Zmei Gorynich
Creating a Character
Wi-Fi
Numerical Sequence (hard version)
Numerical Sequence (easy version)
Swords
White Sheet
Shooting
Prefixes
Radio Stations
Marbles
Ticket Game
Swap Letters
The Number of Products
Yellow Cards
Tiles Placement
Feeling Good
Employment
Petya and Construction Set
Treasure Island
Bad Sequence
Badges
Optimal Currency Exchange
Path Queries
Unstable String Sort
Two Small Strings
Equalizing by Division (hard version)
Equalizing by Division (easy version)
Book Reading
Bad Prices
Chips Moving
Unusual Graph
Road Repair in Treeland
King's Path
kotlinkotlinkotlinkotlin...
Double Permutation Inc.
Teams
Ice Cream
Traveling Around the Golden Ring of Berland
Three Problems
Mateusz and Escape Room
Marek and Matching (hard version)
Marek and Matching (easy version)
Wojtek and Card Tricks
Konrad and Company Evaluation
Kamil and Making a Stream
Marcin and Training Camp
Anadi and Domino
Moving Walkways
Into Blocks (hard version)
Into Blocks (easy version)
Koala and Notebook
Rotate Columns (hard version)
Rotate Columns (easy version)
Cow and Snacks
Paint the Digits
Koala and Lights
Paint the Numbers
Red Blue Tree
Polygons
Bits And Pieces
Let Them Slide
Restore Permutation
Magic Grid
Uniqueness
XORinacci
Indie Album
Remainder Problem
XOR Guessing
Number Of Permutations
Gas Pipeline
Square Filling
There Are Two Types Of Burgers
Make Product Equal One
Choose Two Numbers
Beauty of a Permutation
Expected Value Again
Almost All
Shortest Cycle
Almost Equal
Natasha, Sasha and the Prefix Sums
Kirk and a Binary String (hard version)
Kirk and a Binary String (easy version)
Anna, Svyatoslav and Maps
Mislove Has Lost an Array
BowWow and the Timetable
Complete the Projects (hard version)
Complete the Projects (easy version)
Boxers
Remove the Substring (hard version)
Remove the Substring (easy version)
Common Divisors
Equal Rectangles
Circle of Students
You Are Given Some Letters...
You Are Given Some Strings...
Print a 1337-string...
You Are Given a WASD-string...
You Are Given a Decimal String...
You Are Given Two Binary Strings...
Knightmare (hard)
Knightmare (easy)
Treasure Hunting
Maximum Median
Zero Array
Important Exam
Graph Traveler
Compress Words
White Lines
Round Corridor
Block Adventure
Hotelier
Water Lily
City Day
GCD Groups 2
Rectangle Painting 2
Rectangle Painting 1
Matching vs Independent Set
Welfare State
MP3
Culture Code
Yet Another Subarray Problem
Array Splitting
Pillars
DIY Wooden Ladder
K-th Path
Connected Component on a Chessboard
RGB Substring (hard version)
RGB Substring (easy version)
Robot Breakout
Odd Sum Segments
Three Piles of Candies
Geometers Anonymous Club
OpenStreetMap
Submarine in the Rybinsk Sea (hard edition)
Submarine in the Rybinsk Sea (easy edition)
Basketball Exercise
Sport Mafia
Drinks Choosing
Another Meme Problem
Crossword Expert
Count The Rectangles
1-2-K Game
From S To T
Yet Another Crosses Problem
Remove a Progression
Tokitsukaze and Mahjong
Tokitsukaze and Enhancement
Tokitsukaze and Powers
Tokitsukaze and Explosion
Tokitsukaze and Strange Rectangle
Tokitsukaze and Duel
Tokitsukaze, CSL and Stone Game
Tokitsukaze and Discard Items
Candies!
Number Circle
Keanu Reeves
Problem from Red Panda
Array Beauty
Count Pairs
Add on a Tree: Revolution
Add on a Tree
Gang Up
Expected Square Beauty
Tree Painting
Subarray Sorting
Vasya And Array
Letters Shop
Stickers and Toys
Vus the Cossack and a Graph
Vus the Cossack and a Field
Vus the Cossack and Numbers
Vus the Cossack and Strings
Vus the Cossack and a Contest
Playlist for Polycarp (hard version)
Playlist for Polycarp (easy version)
Two Pizzas
Polycarp and Snakes
Extra Element
Exam in BerSU (hard version)
Exam in BerSU (easy version)
Email from Polycarp
Ropewalkers
Daleks' Invasion (hard)
Daleks' Invasion (medium)
Daleks' Invasion (easy)
Parallel Universes (Hard)
Parallel Universes (Easy)
Heidi and the Turing Test (Hard)
Heidi and the Turing Test (Medium)
Heidi and the Turing Test (Easy)
The Doctor Meets Vader (Hard)
The Doctor Meets Vader (Medium)
The Doctor Meets Vader (Easy)
Heidi Learns Hashing (Hard)
Heidi Learns Hashing (Medium)
Heidi Learns Hashing (Easy)
Subsequences (hard version)
Candy Box (hard version)
Topforces Strikes Back
Subsequences (easy version)
Candy Box (easy version)
Equalize Prices
Nearest Interesting Number
Maximum Sine
Product Oriented Recurrence
Complete Mirror
Beautiful Lyrics
Plus from Picture
Filling Shapes
A Story of One Country (Hard)
A Story of One Country (Easy)
Irrigation
Flag
Split a Number
Chunga-Changa
Nick and Array
Alex and a Rhombus
Alesya and Discrete Math
Fedor Runs for President
Serge and Dining Room
Tolik and His Uncle
Valeriy and Deque
Stock Exchange
The Awesomest Vertex
Long Colorful Strip
Short Colorful Strip
Archaeology
Prime Graph
WOW Factor
Prime Minister
Digits Sequence (Hard Edition)
Digits Sequence (Easy Edition)
Destroy it!
Cover it!
Recover it!
Lose it!
Merge it!
Divide it!
Yet Another Partiton Problem
The Number of Subpermutations
Minimal Segment Cover
Electrification
Catch Overflow!
From Hero to Zero
Ehab and the Big Finale
Ehab and the Expected GCD Problem
Ehab and the Expected XOR Problem
Ehab and a Special Coloring Problem
Ehab Is an Odd Person
Ehab Fails to Be Thanos
Nauuo and Chess
Nauuo and Votes
Nauuo and Bug
Nauuo and ODT
Nauuo and Portals
Nauuo and Pictures (hard version)
Nauuo and Pictures (easy version)
Nauuo and Circle
Nauuo and Cards
Circle Metro
Xor Permutations
Anagram Paths
And Reachability
Good Triple
Increasing by Modulo
Low Budget Inception
Scalar Queries
Range Deleting
Bicolored RBS
News Distribution
Lost Numbers
Telephone Number
Vicky's Delivery Service
The LCMs Must be Large
Cute Sequences
A Tale of Two Lands
All the Vowels Please
Silent Classroom
Microtransactions (hard version)
Microtransactions (easy version)
Two Arrays and Sum of Functions
Almost All Divisors
Polycarp Training
Remainder
Indecisive Taxi Fee
Magical Permutation
Mysterious Code
Power Transmission (Hard Edition)
Power Transmission (Easy Edition)
Cat Party (Hard Edition)
Cat Party (Easy Edition)
Eating Soup
Double Matrix
Zoning Restrictions Again
Expansion coefficient of the array
A pile of stones
Density of subarrays
Strange device
Winding polygonal line
Permutation recovery
The minimal unique substring
The Party and Sweets
Inverse of Rows and Columns
Maximum Balanced Circle
N Problems During K Days
Increasing Subsequence (hard version)
Increasing Subsequence (easy version)
Long Number
Reachable Numbers
Optimizer
Card Bag
Special Segments of Permutation
0-1-Tree
Match Points
Ugly Pairs
Inscribed Figures
Delivery Oligopoly
Guess the Root
Alarm Clocks Everywhere
Game with Telephone Numbers
Reverse a Substring
Minimum Possible LCM
Shovels Shop
Two Teams
Walking Robot
Gourmet Cat
Restoring Three Numbers
Serval and Bonus Problem
Serval and Snake
Serval and Rooted Tree
Serval and Parenthesis Sequence
Serval and Toy Bricks
Serval and Bus
Neko Rules the Catniverse (Large Version)
Neko Rules the Catniverse (Small Version)
Neko and Flashback
Neko and Aki's Prank
Neko does Maths
Neko Performs Cat Furrier Transform
Neko Finds Grapes
Sonya and Informatics
Stas and the Queue at the Buffet
Problem for Nazar
Dima and a Bad XOR
Maxim and Biology
Tiling Challenge
Stock Arbitraging
Election Promises
Abandoning Roads
Tree Generator™
Three Religions
Prefix Sum Primes
Holy Diver
Gold Experience
Foo Fighters
Earth Wind and Fire
Dirty Deeds Done Dirt Cheap
Crazy Diamond
Born This Way
Another One Bites The Dust
Zigzag Game
Rainbow Coins
Palindrome XOR
Thanos Nim
Chladni Figure
Hide and Seek
Satanic Panic
Zoning Restrictions
Leaf Partition
Hot is Cold
Frog Jumping
Hate "A"
Love "A"
Two Merged Sequences
Graph Without Long Directed Paths
Median String
Equalize Them All
Two Shuffled Sequences
Parity Alternated Deletions
Diverse Strings
Queen
Nirvana
The Doors
Pink Floyd
Foreigner
U2
Lynyrd Skynyrd
The Beatles
Privatization of Roads in Treeland
Same Sum Blocks (Hard)
Same Sum Blocks (Easy)
Superhero Battle
Colored Boots
Polycarp Restores Permutation
Maximal Continuous Rest
Game 23
Double Tree
Extending Set of Points
Palindrome-less Arrays
Minimum Triangulation
Detective Book
Dish Shopping
Steps to One
Edgy Trees
Chocolates
Even Substrings
Circus
Sushi for Two
Matches Are Not a Child's Play
Train Car Selection
Cooperative Game
Museums Tour
Camp Schedule
Skyscrapers
Nastya Hasn't Written a Legend
Nastya Is Buying Lunch
Nastya Is Transposing Matrices
Nastya Is Playing Computer Games
Nastya Is Reading a Book
Spanning Tree with One Fixed Degree
Spanning Tree with Maximum Degree
K Balanced Teams
Zero Quantity Maximization
Balanced Team
Preparation for International Women's Day
Middle of the Contest
Greedy Subsequences
Clear the String
Stressful Training
Painting the Fence
Most Dangerous Shark
Asya And Kittens
String Multiplication
Gourmet choice
Draw!
Sea Battle
Connect
Two Cakes
Legendary Tree
Isolation
Wrong Answer
Toy Train
Toy Train (Simplified)
System Testing
Mike and Children
Technogoblet of Fire
Secret Letters
The very same Munchhausen
Power Tree
Compress String
Once in a casino
Diana and Liana
Get Ready for the Battle
Niyaz and Small Degrees
Pavel and Triangles
Frets On Fire
Ramesses and Corner Inversion
Alyona and a Narrow Fridge
Ilya and a Colorful Walk
Tree Cutting (Hard Version)
Tree Cutting (Easy Version)
Yet Another Ball Problem
Coffee and Coursework (Hard Version)
Coffee and Coursework (Easy version)
Palindromic Matrix
Tanya and Candies
Water Buying
Recursive Queries
Crisp String
Decypher the String
Magic Gems
Magic Ship
Emotes
Best Subsegment
Block unitary
Chessboard unitary
Anti-diagonal unitary
Palindrome checker oracle
OR oracle
AND oracle
Please, another Queries on Array?
Arithmetic Progression
Flood Fill
Trailing Loves (or L'oeufs?)
Yet Another Array Partitioning Task
Got Any Grapes?
Sasha and Magnetic Machines
Sasha and His Trip
Tree
Destroy the Colony
Creative Snap
Average Superhero Gang Power
Superhero Transformation
Modest Substrings
Tree-Tac-Toe
Nearest Leaf
Magic Stones
Jongmah
Meaningless Operations
Tape
Parity
Sasha and Algorithm of Silence's Sounds
Sasha and a Very Easy Test
Sasha and Interesting Fact from Graph Theory
Sasha and a Patient Friend
Sasha and One More Name
Sasha and a Bit of Relax
MST Unification
Array and Segments (Hard version)
Array and Segments (Easy version)
Diverse Garland
Nice Garland
Divisors of Two Integers
Two distinct points
Vasya and Maximum Profit
Vasya and Endless Credits
Vasya and Binary String
Compression
Brutality
Digital root
Digits Sequence Dividing
Lunar New Year and a Recursive Sequence
Lunar New Year and Red Envelopes
Lunar New Year and a Wander
Lunar New Year and Number Division
Lunar New Year and Food Ordering
Lunar New Year and Cross Counting
Helping Hiasat
Kilani and the Game
Ayoub and Lost Array
Zuhair and Strings
Salem and Sticks
Game with string
Splitting into digits
Radix sum
Professional layer
Johnny Solving
Game with modulo
Grid game
Elongated Matrix
Monotonic Renumeration
Balanced Ternary String
Doors Breaking and Repairing
Array K-Coloring
Integer Sequence Dividing
(Zero XOR Subset)-less
Trucks and Cities
Polycarp's New Job
GCD Counting
Division and Union
Accordion
Minimum Integer
Ivan and Burgers
Andrew and Taxi
Dasha and Chess
NN and the Optical Illusion
Build a Contest
Roman and Browser
Cookies
Postcard
Squares and Segments
Snowball
Ж-function
Fedya the Potter
Eels
Construct a tree
Nice table
Sum in the tree
Mateusz and an Infinite Sequence
Vladislav and a Great Legend
Alex and a TV Show
Egor and an RPG game
Makoto and a Blackboard
Yuhao and a Parenthesis
Petr and a Combination Lock
Gennady and a Card Game
Lucky Tickets
Inversion Expectation
The Top Scorer
Polygon for the Angle
Substring Removal
Find Divisible
Almost Regular Bracket Sequence
Circular Dance
Powers Of Two
Array Stabilization
Repeating Cipher
Multidimensional Queries
Vasya and Array
Intersection of Permutations
Beautiful Graph
Mishka and the Last Exam
Letters Rearranging
Dice Rolling
Tree with Maximum Cost
Minimal Diameter Forest
Great Vova Wall (Version 2)
Great Vova Wall (Version 1)
Teams Forming
Uniform String
New Year and the Tricolore Recreation
New Year and the Factorisation Collaboration
New Year and the Mallard Expedition
New Year and the Acquaintance Estimation
New Year and the Permutation Concatenation
New Year and the Sphere Transmission
New Year and the Treasure Geolocation
New Year and the Christmas Ornament
The Pleasant Walk
Berland University
Right Expansion Of The Mind
Two Prefixes
Minimal Product
Linearization
Combostone
How to Learn You Score
Horseback Riding
Similar Arrays
New Year Presents
LaTeX Expert
Company Merging
Minegraphed
Lazyland
King Kog's Reception
JS Minification
Interval-Free Permutations
Harder Satisfiability
Guest Student
Fractions
Easy Chess
Distance Sum
Cactus Search
Bimatching
Alice the Fan
Ehab and a weird weight formula
Ehab and a component choosing problem
Ehab and another another xor problem
Ehab and a 2-operation task
Ehab and subtraction
Ehab and another construction problem
Forest Fires
Beautiful Matrix
Rock-Paper-Scissors Champion
Vasya and Templates
Minimum Diameter Tree
Connect Three
Div Times Mod
Right-Left Cipher
The Fair Nut and String
Kvass and the Fair Nut
The Fair Nut and Elevator
The Fair Nut and Amusing Xor
The Fair Nut and Rectangles
The Fair Nut's getting crazy
Max Mex
The Fair Nut and Strings
The Fair Nut and the Best Path
Petya and Graph
Speed Dial
Increasing Frequency
Maximum Diameter Graph
Multi-Subject Competition
Vova and Trophies
Vasya and Book
Palindromic Magic
Mergesort Strikes Back
Tricky Interactor
Missing Numbers
Maximum Distance
Colorful Bricks
Farewell Party
Definite Game
Katya and Segments Sets
Sonya and Matrix Beauty
Olya and magical square
Masha and two friends
Margarite and the best present
Petya and Origami
Negative Time Summation
Pictures with Kittens (hard version)
Pictures with Kittens (easy version)
Thematic Contests
Cutting Out
Good Array
Disturbed People
Summer Practice Report
Vasya and a Tree
Edge Deletion
Meme Problem
Divisor Subtraction
Minimizing the String
Taxi drivers and Lyft
The King's Race
Yet Another LCP Problem
Choosing Two Paths
Segment Sum
Berland Fair
Vasya and Robot
Vasya and Books
Diverse Substring
Rain Protection
Algoland and Berland
Odd Federalization
Video Posts
Streets and Avenues in Berhattan
Privatization of Roads in Berland
BerOS File Suggestion
Monsters and Potions
Debate
Getting Deals Done
Garbage Disposal
Cloud Computing
Berkomnadzor
Find a Number
Colored Rooks
LCM
Random Forest Rank
Multihedgehog
Array Without Local Maximums
Yet another 2D Walking
Binary Numbers AND Sum
Boxes Packing
Books Queries
Heaters
Vova and Train
Fibonacci Suffix
Up and Down the Tree
Side Transmutations
Three Pieces
Vasya and Isolated Vertices
Vasya and Chocolate
Equations of Mathematical Magic
Make a triangle!
String Journey
Lasers and Mirrors
Candies for Children
Dwarves, Hats and Extrasensory Abilities
Oh Those Palindromes
Upgrading Cities
Company
Fun with Integers
Banh-mi
A Prank
Lost Root
TV Shows
Multiplicity
Views Matter
Sophisticated Device
Balls and Pockets
Shrinking Tree
Sergey and Subway
Social Circles
Maximum Subrectangle
Maximum Sum of Digits
Phone Numbers
Split the Tree
Nature Reserve
Forgery
Cashier
Tanya and Colored Candies
DDoS
Bmail Computer Network
Detect Robots
Take Metro
Write The Contest
Check Transcription
Decorate Apple Tree
Pick Heroes
Divide Candies
Determine Line
Jellyfish Nightmare
Tree and XOR
Segments on the Line
Refactoring
Lucky Days
Alice and Hairdresser
Metro
Epic Convolution
New Road Network
Electric Scheme
Chips Puzzle
Changing Array
Candies Distribution
Appending Mex
Elevator or Stairs?
Euler tour
Distinctification
The Shortest Statement
Vasya and Big Integers
Bicolorings
Vasya and Multisets
Relatively Prime Pairs
Vasya And Password
Cover Points
Little C Loves 3 I
Say Hello
Splitting money
Space Formula
Moonwalk challenge
Palindrome Pairs
Self-exploration
AI robots
Shady Lady
Ancient civilizations
Interstellar battle
Hyperspace Highways
Space Isaac
Last chance
DFS
Grid Sort
Deduction Queries
Optimal Polygon Perimeter
Intersecting Subtrees
The Tower is Going Home
Speckled Band
Make It One
Train Hard, Win Easy
Mysterious Crime
Smallest Word
Leaf Sets
Vasya and Magic Matrix
Petya and Array
Array Product
Vitamins
Benches
Ray in the tube
Tree Reconstruction
Glider
Buying a TV Set
Heist
Shashlik Cooking
Palindrome Dance
Summer Oenothera Exhibition
You Are Given a Tree
Network Safety
Subway Pursuit
Timetable
Wrap Around
Maximum Matching
Slime
Non-Coprime Partition
Equality
Security
A Game on Strings
Maximum Reduction
Trips
Valid BFS?
Reach Median
Packets
Sources and Sinks
Relatively Prime Powers
Covered Points
Vasya and Arrays
Classy Numbers
Diagonal Walking v.2
Function Height
Little C Loves 3 III
Intervals of Intervals
Region Separation
Little C Loves 3 II
Enlarge GCD
Boolean Computer
Hidden Bipartite Graph
Divisors
Square Difference
King Escape
Chattering
Vasya and Maximum Matching
The Unbearable Lightness of Weights
Barcelonian Distance
Playing Piano
Personalized Cup
Kitchen Utensils
Familiar Operations
Triple Flips
Minimum path
Cram Time
Curiosity Has No Limits
Golden Plate
Linear Congruential Generator
Putting Boxes Together
Vasya and Good Sequences
Vasya and Triangle
Vasya and Golden Ticket
Vasya and Cornfield
In Search of an Easy Problem
Multicolored Markers
Tree with Small Distances
Concatenated Multiples
Maximal Intersection
Creating the Contest
Many Equal Substrings
Make Square
Guess the number
Make Symmetrical
Restore Array
Order book
Unnatural Conditions
Find Square
X-mouse in the Campus
Session in BSU
Inverse Coloring
Mouse Hunt
Minimum Value Rectangle
Numbers on the Chessboard
Palindromic Twist
Company Acquisitions
Disjoint Triangles
Colored Cubes
Recovering BST
Plasticine zebra
Weakened Common Divisor
Doggo Recoloring
Pisces
Mobile Phone Network
Down or Right
Array Restoration
Bracket Subsequence
Pair of Toys
Single Wildcard Pattern Matching
Badge
New Building for SIS
Raining season
Large Triangle
Sergey's problem
The hat
The Films
The Tree
The Neutral Zone
The Supersonic Rocket
The Wu
The Phone Number
The Bits
The Rank
Appropriate Team
Road Projects
Rest In The Shades
Vasya And The Matrix
Vasya And The Mushrooms
Segment Occurrences
Death Note
Bracket Substring
Stars Drawing (Hard Edition)
Stars Drawing (Easy Edition)
Walking Between Houses
Songs Compression
Obtaining the String
Points in Segments
And
Piles With Stones
Passports
Cycle sort
AB-Strings
Hills
Chemical table
Photo of The Sky
Planning The Expedition
Stages
Store
Mars rover
Border
Rocket
Fly
Allowed Letters
Dominant Indices
Intercity Travelling
Relatively Prime Graph
Annoying Present
Minimum Ternary String
Game Shopping
Turn the Rectangles
Romaji
Mini Metro
Ants
Guess two numbers
Pave the Parallelepiped
Reorder the Array
Xor-Paths
Military Problem
Two Strings Swaps
Three Parts of the Array
Polycarp's Practice
Adjacent Replacements
Berland and the Shortest Paths
Median on Segments (General Case Edition)
Median on Segments (Permutations Edition)
Polycarp and Div 3
Summarize to the Power of Two
Delete from the Left
Tanya and Stairways
Sonya and Bitwise OR
Sonya and Ice Cream
Sonya and Matrix
Sonya and Robots
Sonya and Exhibition
Sonya and Hotels
Abbreviation
Tree Constructing
Coins and Queries
Intense Heat
Binary String Constructing
Polycarp's Pockets
Another array reconstruction algorithm
Bernstein-Vazirani algorithm
Oracle for majority function
Oracle for f(x) = b * x + (1 - b) * (1 - x) mod 2
Oracle for f(x) = b * x mod 2
Distinguish zero state and plus state without errors
Distinguish zero state and plus state with minimum error
Distinguish four 2-qubit states - 2
Distinguish four 2-qubit states
Distinguish GHZ state and W state
Distinguish zero state and W state
Generate W state
Generate superposition of two basis states
Generate superposition of zero state and a basis state
Generate superposition of all basis states
Deutsch-Jozsa algorithm
Oracle for f(x) = parity of the number of 1s in x
Oracle for f(x) = k-th element of x
Distinguish multi-qubit basis states
Distinguish Bell states
Distinguish plus state and minus state
Generate GHZ state
Generate Bell state
Generate plus state or minus state
Two-Paths
One Occurrence
We Need More Bosses
Yet Another Problem On a Subsequence
Covered Points Count
Light It Up
Codehorses T-shirts
Cards and Joy
Reachability from the Capital
Equalize the Remainders
Alphabetic Removals
Reversing Encryption
Mishka and Contest
Cutting
Balloons
Good Subsegments
Cycles in product
Sky Full of Stars
Roman Digits
Convert to Ones
World Cup
Hit the Lottery
Cowmpany Cowmpensation
Number Clicker
Leaving the Bar
Suit and Tie
Tesla
Knights of a Polygonal Table
Fingerprints
The Moral Dilemma
Nikita and Order Statistics
Compute Power
Careful Maneuvering
Open Communication
Two Squares
Nastya and King-Shamans
Nastya and a Game
Nastya and a Wardrobe
Nastya Studies Informatics
Nastya and an Array
Concise and clear
Bus Number
Bishwock
Getting an A
If at first you don't succeed...
Post Lamps
Graph And Its Complement
Bracket Sequences Concatenation Problem
Micro-World
Commentary Boxes
A Trance of Nightfall
A Shade of Moonlight
A Mist of Florescence
A Tide of Riverscape
A Blend of Springtime
Rain and Umbrellas
Divisibility by 25
Points and Powers of Two
Equal Sums
Substrings Sort
Diverse Team
Three displays
High School: Become Human
Infinity Gauntlet
Oppa Funcan Style Remastered
Prince's Problem
Perfect Encoding
AND Graph
Petr and Permutations
Fair
Team Players
Isomorphic Strings
Pencils and Boxes
Sand Fortress
Liebig's Barrels
Switches and Lamps
Chess Placing
Minesweeper
NN country
Arkady and Rectangles
Elevator
XOR-pyramid
Finite or not?
The Meeting Place Cannot Be Changed
Billiard
Shark
Cut 'em all!
Bus of Characters
Row
K Paths
Magic multisets
Round Marriage
Addition on Segments
Bookshelves
Useful Decomposition
Businessmen Problems
Antipalindrome
Cactus to Tree
The Number Games
Perfect Groups
Posterized
Marlin
Links and Pearls
Kuro and Topological Parity
Kuro and GCD and XOR and SUM
Kuro and Walking Route
Pizza, Pizza, Pizza!!!
Petya's Exams
Mentors
Bus Video System
Almost Arithmetic Progression
Letters
File Name
Remove Duplicates
Consecutive Subsequence
Cyclic Components
Divide by three, multiply by two
Less or Equal
Two-gram
Wrong Subtraction
Minimal k-covering
Well played!
Degree Set
Lara Croft and the New Game
Minimum Binary Number
Hag's Khashba
Ghosts
Valhalla Siege
Mancala
Aramic script
Watering System
Mind the Gap
Short Code
Single-use Stones
Greedy Arkady
Battleship
Paper Airplanes
Splits
Circles of Waiting
Frequency of String
Cutting Rectangle
Destruction of a Tree
Alternating Sum
Visible Black Areas
Simple Cycles Edges
Byteland, Berland and Disputed Cities
Merge Equals
Make a Square
Students in Railway Carriage
Equator
Partitions
k-substrings
Tufurama
Pair Of Lines
Chessboard
Lecture Sleep
Tetris
Santa's Gift
Bandit Blues
Pathwalks
Alternating Tree
Full Binary Tree Queries
Subsequence Counting
Minimize the error
Check the string
Mahmoud and Ehab and yet another xor task
Mahmoud and Ehab and the xor-MST
Mahmoud and Ehab and another array construction task
Mahmoud and Ehab and the wrong algorithm
Mahmoud and Ehab and the message
Mahmoud and Ehab and the even-odd game
Lightsabers (hard)
Lightsabers (medium)
Lightsabers (easy)
Guard Duty (hard)
Guard Duty (medium)
Guard Duty (easy)
Hyperspace Jump (hard)
Hyperspace Jump (easy)
Encryption (hard)
Encryption (medium)
Encryption (easy)
Maximum Control (medium)
Maximum Control (easy)
Death Stars (hard)
Death Stars (medium)
Death Stars (easy)
Tritonic Iridescence
Heaps
Icicles
Scissors
Sad powers
Not simply beatiful strings
Feed the cat
Yet Another String Matching Problem
Path Counting
Castle Defense
Runner's Problem
Water Taps
Fight Against Traffic
Matrix Walk
String Typing
Diagonal Walking
Puzzling Language
2 + 2 != 4
Cheese Board
I'm Feeling Lucky!
Ravioli Sort
A Map of the Cat
Quirky Quantifiers
Intercepted Message
Left-handers, Right-handers and Ambidexters
Astronomy
Binary Cards
Curfew
Data Center Maintenance
A Leapfrog in the Array
Zebras
Protect Sheep
Almost Increasing Array
Fibonacci String Subsequences
Largest Beautiful Number
String Transformation
Weird Subtraction Process
Partition
Machine Learning
Cashback
Alena And The Heater
Our Tanya is Crying Out Loud
Points on the line
Cutlet
Maximize!
Love Rescue
Convenient For Everybody
Hamster Farm
Love Triangle
Shortest Path Queries
Erasing Substrings
Max History
Buy a Ticket
Constructing Tests
Run For Your Prize
Word Correction
Vile Grasshoppers
Olympiad
Iqea
World of Tank
Lock Puzzle
Sleepy Game
Save Energy!
Fafa and Array
Fafa and Ancient Mathematics
Fafa and Ancient Alphabet
Fifa and Fafa
Fafa and the Gates
Fafa and his Company
A Prosperous Lot
A Compatible Pair
A Preponderant Reunion
A Creative Cutout
A Colourful Prospect
A Determined Cleanup
A Twisty Movement
Escape Through Leaf
Team Work
Permutation Cycle
Palindromic Supersequence
Laboratory Work
Friends Meeting
Coins Exhibition
Game with Tokens
Teodor is not a liar!
Game with String
Peculiar apple-tree
Пограничные врата
Красивая команда
Места в самолёте
Прокат велосипедов
Dependency management
Chat
Login Verification
BuberPool Taxi Optimization
Segments
A Vital Problem
Endless Roses Most Beautiful
Large Bouquets
Mobile Communications
Merge Equal Elements
Choose Place
Is This a Zebra?
Add Points
2-3-numbers
Parametric Circulation
May Holidays
Aztec Catacombs
Big Secret
Resource Distribution
Stairs and Elevators
Minimal Subset Difference
Wardrobe
Contact ATC
Riverside Curio
Three-level Laser
Mystical Mosaic
Public Service
Perpetual Subtraction
Picking Strings
Perfect Security
Producing Snow
Primal Sport
Divisibility
Birds
Robot Vacuum Cleaner
Cave Painting
Magic Forest
Cloning Toys
Labyrinth-14
Labyrinth-13
Labyrinth-12
Labyrinth-11
Labyrinth-10
Labyrinth-9
Labyrinth-8
Labyrinth-7
Labyrinth-6
Labyrinth-5
Labyrinth-4
Labyrinth-3
Labyrinth-2
Labyrinth-1
List Of Integers
SUM and REPLACE
Connected Components?
Tanks
Swap Adjacent Elements
Tea Queue
Water The Garden
A Game With Numbers
Congruence Equation
Substring
Seat Arrangements
Perfect Number
Supermarket
Radio Station
Eleven
Upside Down
Stranger Trees
Pollywog
MADMAX
The Monster
Jamie and Tree
Jamie and To-do List
Jamie and Interesting Graph
Jamie and Binary Sequence (changed after round)
Jamie and Alarm Snooze
Coprime Arrays
Imbalance Value of a Tree
Physical Education Lessons
Almost Acyclic Graph
Permute Digits
Browser
Garden
Ember and Storm's Tree Game
Sum the Fibonacci
Substrings in a String
Palindromes in a Tree
Bash and a Tough Math Puzzle
Travelling Salesman and Special Numbers
Conan and Agasa play a Card Game
Perfect Squares
Don't Exceed
Power Substring
Strongly Connected Tournament
Logical Expression
Too Easy Problems
Party Lemonade
Christmas Spruce
Modular Exponentiation
Prime Gift
Fishes
Perun, Ult!
New Year's Eve
Tricky Alchemy
Mass Change Queries
Stack Sorting
Inversion Counting
Three Garlands
Nearest Minimums
Minimum Sum
Door Frames
The Way to Home
AND-permutations
Coprocessor
Colorful Points
Python Indentation
Generate Login
New Year and Boolean Bridges
New Year and Original Order
New Year and Rainbow Roads
New Year and Entity Enumeration
New Year and Arbitrary Arrangement
New Year and Curling
New Year and Buggy Bot
New Year and Counting Cards
Tic-Tac-Toe
Masha and Bears
Reverses
Power Tower
Seating of Students
Shockers
Yet Another Maxflow Problem
Clear The Matrix
Swapping Characters
Almost Difference
The Modcrab
Hungry Student Problem
Coloring a Tree
Visiting a Friend
Cyclic Cipher
Weighting a Tree
Bipartite Segments
GCD of Polynomials
Hashing Trees
Maximum Questions
Unusual Sequences
Remove Extra One
Position in Fraction
Find Extra One
Letters Removing
Segments Removal
Shovel Sale
Dividing the numbers
Months and Years
Splitting in Teams
Restoring the Expression
Squares and not squares
Proper Nutrition
Rounding
Chtholly's request
Scarborough Fair
Welcome home, Chtholly
Nephren Runs a Cinema
Willem, Chtholly and Seniorious
Ithea Plays With Chtholly
Nephren gives a riddle
Eyes Closed
String Mark
Square Subsets
XK Segments
Pizza Separation
Ralph and Mushrooms
Ralph And His Tour in Binary Country
Marco and GCD Sequence
Ralph And His Magic Field
QAQ
Subtree Minimum Query
Credit Card
Rumor
Beautiful Divisors
Wrath
Greed
Lust
Sloth
Envy
Gluttony
Pride
Mod Mod Mod
Xor-MST
Connecting Vertices
Maximum Subsequence
Almost Identity Permutations
K-Dominant Character
Buggy Robot
Local Extrema
Row of Models
Little Brother
Ratings and Reality Shows
Solution for Cube
Cubes for Masha
Div. 64
Symmetric Projections
Maximum Element
Restoration of string
Petya and Catacombs
Vlad and Cafes
ACM ICPC
Anti-Palindromize
Boxes And Balls
Bertown Subway
Japanese Crosswords Strike Back
Quadcopter Competition
Berland.Taxi
Road Widening
Renovation
Photo Processing
Palindromic Cut
Orientation of Edges
Lost in Transliteration
Field of Wonders
Packmen Strike Back
Downloading B++
Berland Army
Automatic Door
Table Tennis
Borya's Diagnosis
Numbers on the blackboard
Magic Breeding
Teams Formation
Short Program
Ann and Books
Danil and a Part-time Job
Olya and Energy Drinks
Slava and tanks
Nikita and string
Alex and broken contest
Divisiblity of Differences
Trip For Meal
Royal Questions
Delivery Club
High Cry
National Property
Sorting the Coins
Classroom Watch
Forbidden Indices
Awards For Contestants
Merge Sort
Strange Game On Matrix
Chores
Restore the Tree
Paths
Points, Lines and Ready-made Titles
Something with XOR Queries
Maximum splitting
Maximum of Maximums of Minimums
Search for Pretty Integers
The Untended Antiquity
The Overdosing Ubiquity
The Intriguing Obsession
The Eternal Immortality
The Artful Expedient
El Toll Caves
Policeman and a Tree
Huge Strings
Qualification Rounds
Race Against Time
Bark to Unlock
Between the Offices
Flowers and Chocolate
Egg Roulette
Hex Dyslexia
Buy Low Sell High
Gotta Go Fast
Ordering Pizza
Save the problem!
Cities Excursions
Fire
Make a Permutation!
Bus
Polycarp and Letters
Fair Game
Graphic Settings
Almost Permutation
Turn Off The TV
Yet Another Array Queries Problem
1-2-3
Kayaking
Quasi-palindrome
Mahmoud and Ehab and the final stage
Mahmoud and Ehab and the function
Mahmoud and Ehab and the binary string
Mahmoud and Ehab and the xor
Mahmoud and Ehab and the bipartiteness
Mahmoud and Ehab and the MEX
Arkady and a Nobody-men
Circle of Numbers
Ordering T-Shirts
Desk Disorder
Third Month Insanity
Pie Rules
Lazy Security Guard
Declined Finalists
Wizard's Tour
Tests Renumeration
Polycarp's phone book
Did you mean...
Which floor?
k-rounding
To Play or not to Play
Satellites
Masha and Cactus
Eleventh Birthday
Similar Words
Set Theory
Harry Vs Voldemort
Nagini
Salazar Slytherin's Locket
Rowena Ravenclaw's Diadem
Helga Hufflepuff's Cup
Marvolo Gaunt's Ring
Tom Riddle's Diary
Maxim Buys an Apartment
Fraction
Lada Malina
Michael and Charging Stations
Boredom
Planning
Bob and stages
Bathroom terminal
Product transformation
Casinos and travel
Exploration plan
Property
Neural Network country
Arpa and an exam about geometry
Arpa and a research in Mexican wave
Rainbow Balls
Random Elections
Tournament Construction
Arpa and a game with Mojtaba
Arpa and a list of numbers
Five Dimensional Points
Tell Your World
Odds and Ends
Days of Floral Colours
Shake It!
Goodbye Souvenir
Rooter's Song
From Y to Y
Weather Tomorrow
Berland SU Computer Network
Travel Cards
Students Initiation
Noise Level
Load Testing
University Classes
Berland Elections
Packmen
Dog Show
Sum of Nestings
Preparing for Merge Sort
Union of Doubly Linked Lists
Random Query
Chemistry in Berland
Monitor
Math Show
Curriculum Vitae
Shortest Path Problem?
Guards In The Storehouse
Fire in the City
Driving Test
Two TVs
Luba And The Ticket
Chess Tourney
Diversity
Maximum Flow
Dynamic Shortest Path
Upgrading Tree
Interactive LowerBound
Sorting by Subsequences
Nikita and game
Vitya and Strange Lesson
Ilya And The Tree
Gleb And Pizza
Kirill And The Game
Godsend
Generous Kefa
In a Trap
Destiny
On the Bench
Leha and another game about graph
Leha and Function
Mother of Dragons
Winter is here
Game of the Rows
Arya and Bran
Expected Earnings
Convex Countour
Airplane Arrangements
Future Failure
Diverging Directions
Binary Blocks
Functions On The Segments
Prefix Sums
Vasya's Function
Round Subset
Two Seals
Flag of Berland
Text Volume
Roads in the Kingdom
The penguin's game
Palindromic characteristics
Star sky
The number on the board
Key races
The Festive Evening
The Useless Toy
Caramel Clouds
Red-Black Cobweb
Ever-Hungry Krakozyabra
The Bakery
The Meaningless Game
Vasya and Shifts
Misha, Grisha and Underground
Strange Radiation
Sasha and Sticks
Jury Marks
Keyboard Layouts
Unimodal Array
Perpetual Motion Machine
Singer House
Bamboo Partition
Cards Sorting
Office Keys
Black Square
Restaurant Tables
Dirty Arkady's Kitchen
Rusty String
Best Edge Weight
DNA Evolution
High Load
String Reconstruction
String Compression
Minimal Labels
Suitable Replacement
Multi-judge Solving
Five-In-a-Row
Binary Protocol
Madness
Liar
My pretty girl Noora
Hacker, pack your bags!
Crossword solving
I'm bored with life
Okabe and El Psy Kongroo
Okabe and City
Okabe and Boxes
Okabe and Banana Trees
Okabe and Future Gadget Laboratory
Mister B and Angle in Polygon
Mister B and Book Reading
Mister B and Flight to the Moon
Mister B and Astronomers
Mister B and Beacons on Field
Mister B and PR Shifts
Mister B and Boring Game
Four Melodies
Level Generation
Card Game Again
Multicolored Cars
Sofa Thief
Diplomas and Certificates
MEX Queries
Choosing The Commander
Imbalanced Array
Really Big Numbers
Makes And The Product
Karen and Coffee
Karen and Morning
Karen and Neighborhood
Karen and Cards
Karen and Supermarket
Karen and Test
Karen and Game
An unavoidable detour for home
An overnight dance in discotheque
An impassioned circulation of affection
An express train to reveries
An abandoned sentiment from past
Bipartite Checking
Army Creation
Two Melodies
The Tag Game
The Golden Age
Sagheer and Apple Tree
Sagheer and Kindergarten
Sagheer and Nubian Market
Sagheer, the Hausmeister
Sagheer and Crossroads
Vladik and Entertaining Flags
Vladik and Favorite Game
Vladik and Memorable Trip
Vladik and Complicated Book
Vladik and Courtesy
Summer sell-off
Straight <>
Surprise me!
Hitchhiking in the Baltic States
Find a car
Glad to see you!
Do you want a date?
Anthem of Berland
Selling Souvenirs
Array Division
Tea Party
Average Sleep Time
Lucky Year
T-Shirt Hunt
Is it rated?
3-palindrome
Fake NP
Fake bullions
The same permutation
Expected diameter of a tree
Ice cream coloring
Minimum number of steps
Find Amir
Periodic RMQ Problem
Coprime Subsequences
Roma and Poker
Magazine Ad
Maximal GCD
Distances to Zero
Maximal Binary Matrix
April Fools' Problem (hard)
April Fools' Problem (medium)
April Fools' Problem (easy)
Send the Fool Further! (hard)
Send the Fool Further! (medium)
Send the Fool Further! (easy)
Fake News (hard)
Fake News (medium)
Fake News (easy)
Marmots (hard)
Marmots (medium)
Marmots (easy)
Heidi and Library (hard)
Heidi and Library (medium)
Heidi and Library (easy)
Valued Keys
Vicious Keyboard
Cut the pie
Beautiful fountains rows
Aquarium decoration
Field expansion
Fountains
T-shirt buying
Carrot Cakes
Mike and code of a permutation
Mike and distribution
Mike and gcd problem
Mike and strings
Mike and palindrome
Mice and Holes
Array Queries
Broken BST
Minimal string
Odd sum
k-Factorization
Sequence Recovery
Exam Cheating
Police Stations
Bank Hacking
Find The Bone
Buying A House
Replace All
Leha and security system
Choosing Carrot
Labelling Cities
Naming Company
Cutting Carrot
Bank Robbery
Oleg and chess
Julia the snail
Problem of offices
Presents in Bankopolis
Mice problem
Igor and his way to work
Oleg and shares
Mages and Monsters
Paths in a Complete Binary Tree
Divide by Three
Counting-out Rhyme
New Bus Route
Bear and Big Brother
Masha and geometric depression
Anastasia and pebbles
New task
Finding lines
The Great Mixing
Weird journey
Functions again
Not Afraid
ALT
Rap God
Till I Collapse
Legacy
Berzerk
Anton and Permutation
Anton and School - 2
Anton and Fairy Tale
Anton and Classes
Anton and Polyhedrons
BF Calculator
Crunching Numbers Just for You
Twisted Circuit
Touchy-Feely Palindromes
INTERCALC
Kids' Riddle
Numbers Joke
Intranet of Buses
Andryusha and Nervous Barriers
Axel and Marston in Bitland
Underground Lab
Innokenty and a Football League
Andryusha and Colored Balloons
Andryusha and Socks
Dishonest Sellers
Weird Rounding
Pupils Redistribution
Selling Numbers
Parquet Re-laying
Peterson Polyglot
Bitwise Formula
String Game
Hanoi Factory
Cloud of Hashtags
Alyona and Spreadsheet
Game of Credit Cards
Shell Game
Sherlock and the Encrypted Data
Sherlock's bet to Moriarty
The Holmes Children
The Door Problem
Molly's Chemicals
Sherlock and his girlfriend
A Serial Killer
University Schedule
Bars
Stepan and Vowels
Stepan's Series
Composing Of String
Repairing Of String
Perfectionist Arkadiy
Pens And Days Of Week
Big Number and Remainder
Lie or Truth
Maximum Number
Significant Cups
Amusement Park
Test Data Generation
Blog Post Rating
Perishable Roads
Prairie Partition
Dynamic Problem Scoring
Success Rate
Verifying Kingdom
Varying Kibibits
Vulnerable Kerbals
Volatile Kite
Voltage Keepsake
Bear and Isomorphic Points
Bear and Rectangle Strips
Bear and Company
Bear and Tree Jumps
Bear and Different Names
Bear and Friendship Condition
Draw Brackets!
Online Courses In BSU
Maximize Sum of Digits
New Password
k-Interesting Pairs Of Integers
Cycle In Maze
News About Credit
Year of University Entrance
The Winds of Winter
Barrels and boxes
Game of Stones
Jon and Orbs
Jon Snow and his Favourite Number
Code For 1
Oath of the Night's Watch
Change-free
Cartons of milk
The Queue
Snacktower
Mahmoud and a xor trip
Mahmoud and a Dictionary
Mahmoud and a Message
Mahmoud and a Triangle
Mahmoud and Longest Uncommon Subsequence
Math, math everywhere
Souvenirs
Tree Folding
Artsem and Saunders
Table Tennis Game 2
Code obfuscation
Neverending competitions
Timofey and cubes
Taymyr is calling you
Timofey and our friends animals
Timofey and a flat tree
Timofey and remoduling
Timofey and rectangles
Timofey and a tree
Tree nesting
Radio stations
Maximum path
Two strings
USB vs. PS/2
k-th divisor
Dasha and Photos
Dasha and Puzzle
Dasha and Very Difficult Problem
Dasha and Password
Dasha and friends
Dasha and Stairs
Frodo and pillows
Petr and a calendar
Geometrical Progression
Broken Tree
Ability To Convert
Unfair Poll
Blown Garland
Holiday Of Equality
Can Bash Save the Day?
Team Rocket Rises Again
Bash Plays with Functions
Felicity's Big Secret Revealed
Felicity is Coming!
Bash's Big Day
Gotta Catch Em' All!
Long number
Byteland coins
Bacterial Melee
Nikita and stack
Travel Card
Pavel and barbecue
PolandBall and Many Other Balls
PolandBall and Gifts
PolandBall and White-Red graph
PolandBall and Polygon
PolandBall and Forest
PolandBall and Game
PolandBall and Hypothesis
Dasha and cyclic table
Fedor and coupons
Vladik and chat
Ilya and tic-tac-toe game
Lesha and array splitting
Interactive Bulls and Cows (Hard)
Interactive Bulls and Cows (Easy)
Santa Claus and Candies
New Year and Snowy Grid
New Year and Binary Tree Paths
New Year and Finding Roots
New Year and Old Subsequence
New Year and Fireworks
New Year and Rating
New Year and North Pole
New Year and Hurry
Inversions After Shuffle
Leaving Auction
Voting
Parallelogram is Back
Bachgold Problem
Santa Clauses and a Soccer Championship
Santa Claus and Tangerines
Santa Claus and a Palindrome
Santa Claus and Robot
Santa Claus and Keyboard Check
Santa Claus and a Place in a Class
Igor and Interesting Numbers
Comments
Winter Is Coming
Servers
Mammoth's Genome Decoding
Display Size
New Roads
Music in Car
Numbers Exchange
Green and Black Tea
Tram
Decoding
Compote
Hongcow Solves A Puzzle
Hongcow Learns the Cyclic Shift
Hongcow Masters the Cyclic Shift
Hongcow Draws a Circle
Hongcow Buys a Deck of Cards
Hongcow's Game
Hongcow Builds A Nation
Vladik and cards
Chloe and pleasant prizes
Vladik and fractions
Chloe and the sequence
Vladik and flights
Arpa’s obvious problem and Mehrdad’s terrible solution
Arpa’s hard exam and Mehrdad’s naive cheat
Arpa’s abnormal DNA and Mehrdad’s deep interest
Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths
Arpa’s overnight party and Mehrdad’s silent entering
Arpa's weak amphitheater and Mehrdad's valuable Hoses
Arpa's loud Owf and Mehrdad's evil plan
Alyona and flowers
Alyona and copybooks
Gosha is hunting
Recover a functional graph
Alyona and towers
Alyona and a tree
Alyona and mex
Dirty plates
Tanya is 5!
Chess Championship
Permutations
Ostap and Tree
Taxes
Tennis Championship
Urbanization
Ostap and Grasshopper
Anton and School
Anton and Tree
Anton and Chess
Anton and Making Potions
Anton and Digits
Anton and Danik
Drivers Dissatisfaction
Sleep in Class
Kostya the Sculptor
Epidemic in Monstropolis
Parade
Grasshopper And the String
Tourist Reform
Sockets
Exams
Sanatorium
Cormen --- The Best Friend Of a Man
Buy a Shovel
Video Cards
80-th Level Archeology
Socks
Coupons and Discounts
Night at the Museum
Expression Queries
Roads Orientation Problem
Bottles
Olympiad in Programming and Sports
Delete Them
Car Repair Shop
Ber Patio
Award Ceremony
Running Over The Bridges
Bulmart
Minimum and Maximum
Toda 2
Financiers Game
Subordinates
Road to Cinema
Spotlights
Interview with Oleg
Polycarp's problems
Games on a CD
T-shirts Distribution
Guess the Array
Bill Total Value
Transformation: from A to B
Messages on a Tree
Family Photos
Too Much Money
Contest Balloons
Hidden Word
Food on the Plane
Jumping Ball
Xor-matic Number of the Graph
Uniformly Branched Trees
Goods transportation
Dense Subsequence
Ray Tracing
Batch Sort
Checking the Calendar
st-Spanning Tree
One-Way Reform
Lakes in Berland
Polycarp at the Radio
Text Document Analysis
The New Year: Meeting Friends
Research Rover
Generating Sets
Destroying Array
Verse Pattern
Broken Clock
Road to Home
Maxim and Array
Passwords
One-dimensional Japanese Crossword
Array Covering
Cipher
Slalom
Cactusophobia
Closing ceremony
Anatoly and Cockroaches
Vitya in the Countryside
Matvey's Birthday
Andrew and Chemistry
Sasha and Array
Efim and Strange Grade
Cowboy Beblop at his computer
Pokermon League challenge
Underfail
Heroes of Making Magic III
Paint it really, really dark gray
Dexterina’s Lab
Potions Homework
R3D3’s Summer Adventure
Festival Organization
Complete the Word
Crazy Computer
Complete the Permutations
Create a Maze
Digit Tree
Complete The Graph
Plus and Square Root
Filya and Homework
Meeting of Old Friends
Sonya Partymaker
Animals and Puzzle
Sonya and Problem Wihtout a Legend
Searching Rectangles
Sonya and Queries
Memory and Casinos
Memory and Scores
Memory and De-Evolution
Memory and Trident
Memory and Crow
ZS and The Birthday Paradox
Directed Roads
Coloring Trees
Chris and Magic Square
Bus to Udayland
String Set Queries
Generate a String
Two Arithmetic Progressions
Magic Odd Square
Optimal Point on a Line
King Moves
Juicer
Student's Camp
Incorrect Flow
Centroids
Recover the String
Letters Cyclic Shift
Garlands
Persistent Bookcase
Brain's Photos
Working routine
Vasiliy's Multiset
Hard problem
Interesting drink
Beru-taxi
Spider Man
Hulk
Iron Man
Captain America
Black Widow
Ant Man
Thor
Mishka and Divisors
Mishka and Interesting sum
Chris and Road
Mishka and trip
Mishka and Game
T-Shirts
Analysis of Pathes in Functional Graph
Road to Post Office
Cellular Network
Powers of Two
Maximum Increase
They Are Everywhere
Cells Not Under Attack
Cool Slogans
Huffman Coding on Segment
Break Up
Connecting Universities
As Fast As Possible
One Bomb
Launch of Collider
Coprime Permutation
Cron
Limak and Shooting Points
LRU
Fix a Tree
Vacations
Barnicle
Pineapple Incident
...Dary!
...Wait for it...
Legen...
PLEASE
Puzzles
Lorenzo Von Matterhorn
Couple Cover
Xor-sequences
Swaps in Permutation
Exponential notation
s-palindrome
Fashion in Berland
Tree of Life (hard)
Tree of Life (medium)
Tree of Life (easy)
Photographs (II)
Photographs (I)
The Wall (hard)
The Wall (medium)
The Wall (easy)
Brain Network (hard)
Brain Network (medium)
Brain Network (easy)
Recover Polygon (hard)
Recover Polygon (medium)
Recover Polygon (easy)
Collective Mindsets (hard)
Collective Mindsets (medium)
Collective Mindsets (easy)
Mike and Geometry Problem
Friends and Subsequences
Mike and Chocolate Thieves
Mike and Shortcuts
Mike and Cellphone
Lovely Palindromes
Opponents
TOF
Dividing Kingdom II
The Values You Can Make
Remainders Game
NP-Hard Problem
Little Robber Girl's Zoo
Free Ice Cream
Travelling Through the Snow Queen's Kingdom
Kay and Eternity
Optimal Point
Kay and Snowflake
Robbers' watch
The Hero with Bombs
Loader
Exchange of Books
The Fraction
Reformat the String
Hammer throwing
Chocolate Bar
Symmetric Difference
The Teacher of Physical Education
The Check of the Point
Alyona and Triangles
Alyona and Strings
Alyona and the Tree
Alyona and Mex
Alyona and Numbers
Runaway to a Shadow
Gifts by the List
Heap Operations
Economy Game
A Good Contest
Bear and Finding Criminals
Bear and Five Cards
Bear and Bad Powers of 42
Bear and Chase
Bear and Square Grid
Bear and Tower of Cubes
Bear and Prime 100
Lena and Queries
Another Sith Tournament
Iterated Linear Function
Joty and Chocolate
The Same Calendar
Johny Likes Numbers
Vanya and Balloons
Vanya and Treasure
Vanya and Label
Vanya and Food Processor
Vanya and Fence
The Last Fight Between Human and AI
Theseus and labyrinth
Vasya and String
Pyramid of Glasses
Nicholas and Permutation
Trains and Statistic
Tree Construction
Money Transfers
Restoring Painting
Infinite Sequence
Problems for Round
Bear and Game
Different is Good
Summer Camp
Organizing a Race
Roads in Yusland
Ultimate Weirdness of an Array
Robin Hood
Recycling Bottles
Restore a Number
Correct Bracket Sequence Editor
Magic Powder - 2
Magic Powder - 1
Cinema
Game of Robots
Holidays
Little Artem and Presents
Coat of Anticubism
Pouring Rain
Forensic Examination
Codeword
World Tour
Reberland Linguistics
Four Divisors
Beautiful Subarrays
Simple Subset
Simple Strings
Shopping
Buses Between Cities
Complicated GCD
Rebus
To Hack or not to Hack
International Olympiad
Binary Table
Gambling Nim
Rotate Matrix
Hungarian Notation
Primes in Interval
Divisibility Check
Maximal Difference
Array Sum
Seasons
Lazy Caterer Sequence
Bear and Bowling 4
Different Subsets For All Tuples
Number of Parallelograms
Hard Process
Seating On Bus
Co-prime Array
Fence Divercity
Polycarp and Hay
New Reform
Bicycle Race
Tanya and Toys
Qualifying Contest
Round House
Bear and Reverse Radewoosh
You're a Professional
Ace It!
Out of Controls
Rosetta Problem
Without Text
Scrambled
Da Vinci Powers
Move by Prime
Paper task
Bear and Forgotten Tree 2
Delivery Bears
Bear and Up-Down
Bear and Compressing
Bear and Three Balls
Ants on a Circle
Pursuit For Artifacts
Foe Pairs
z-sort
Gabriel and Caterpillar
Beautiful Paintings
Joysticks
Clockwork Bomb
Zip-line
Table Compression
Image Preview
Watchmen
Автобус
Дефрагментация памяти
Печать условий
Этажи
Любимые числа Поликарпа
Собери число
Собачки и миски
Путь Робота
Собери стол
Наибольший подъем
Armistice Area Apportionment
Cowslip Collections
Intellectual Inquiry
Robot Rapping Results Report
Enduring Exodus
Mischievous Mess Makers
Amity Assessment
Hostname Aliases
Processing Queries
Parliament of Berland
Choosing Ads
Bears and Juice
Bear and Destroying Subtrees
Bearish Fanpages
Levels and Regions
Bear and Two Paths
Bear and Colors
Little Artem and Graph
Little Artem and 2-SAT
Little Artem and Time Machine
Little Artem and Random Variable
Little Artem and Dance
Little Artem and Matrix
Little Artem and Grasshopper
Bear and Chemistry
Bear and Paradox
Bear and Contribution
Bear and Polynomials
Bear and Forgotten Tree 3
Bear and Displayed Friends
Three-dimensional Turtle Super Computer
Road Improvement
Making Genome in Berland
Home Numbers
Running with Obstacles
Promocodes with Mistakes
Chat Order
Voting for Photos
Orchestra
Island Puzzle
Fibonacci-ish II
Yash And Trees
The Chocolate Spree
Startup Funding
Fibonacci-ish
Spy Syndrome 2
A Trivial Problem
Ebony and Ivory
Magic Matrix
Thief in a Shop
Longest Subsequence
The Smallest String Concatenation
Alice, Bob, Two Teams
Grandma Laura and Apples
Product Sum
Messenger
Report
Print Check
Pyramids
Area of a Star
Arrow
Forecast
Turn
Cracking the Code
Indivisibility
Parking Lot
Challenge Pennants
Selection of Personnel
A rectangle
Hexagons!
Moore's Law
Again Twenty Five!
Famil Door and Roads
Babaei and Birthday Cake
Famil Door and Brackets
Far Relative’s Problem
Far Relative’s Birthday Cake
Bear and Fair Set
Zbazi in Zeydabad
Magic Numbers
Bear and String Distance
New Skateboard
Tennis Tournament
Preorder Test
Package Delivery
Factory Repairs
XOR Equation
Raffles
Group Projects
Simple Skewness
Jerry's Protest
Robot Sequence
Frog Fights
Finals in arithmetic
K-special Tables
War of the Corporations
Guest From the Past
Making a String
Save Luke
Transforming Sequence
Electric Charges
Array GCD
Graph and String
The Sum of the k-th Powers
Ants in Leaves
Optimal Number Permutation
Not Equal on a Segment
The Time
Wet Shark and Blocks
Rat Kwesh and Cheese
Wet Shark and Flowers
Wet Shark and Bishops
Wet Shark and Odd and Even
Xors on Segments
New Year Tree
Professor GukiZ and Two Arrays
Pearls in a Row
Grandfather Dovlet’s calculator
Professor GukiZ's Robot
Combining Slimes
Double Knapsack
Robot Arm
Hamiltonian Spanning Tree
Constellation
Slime Combining
XOR and Favorite Number
Polyline
Watering Flowers
Chocolate
Elephant
Expensive Strings
Sum of Remainders
Longest k-Good Segment
The Labyrinth
Dinner with Emma
Comparing Two Long Integers
Multipliers
Running Track
Longtail Hedgehog
Bulbs
Gena's Code
Link/Cut Tree
Puzzle Lover
Kingdom and its Cities
Necklace
Skills
Peter and Snow Blower
Simba on the Circle
Square Root of Permutation
The Union of k-Segments
Replace To Make Regular Bracket Sequence
HDD is Outdated Technology
The Text Splitting
New Year and Forgotten Tree
New Year and Cake
New Year and Cleaning
New Year and Three Musketeers
New Year and Ancient Prophecy
New Year and Domino
New Year and Old Property
New Year and Days
Alphabet Permutations
Vika and Segments
Harmony Analysis
Vika and Squares
Pasha and Stick
Frogs and mosquitoes
Minimum spanning tree for each edge
Gadgets for dollars and pounds
Load Balancing
The Best Gift
USB Flash Drives
Hamming Distance Sum
Saitama Destroys Hotel
Cross Sum
Zuma
Testing Robots
Magic Spheres
Intergalaxy Trips
Board Game
Freelancer's Dreams
Lazy Student
Sorting Railway Cars
More Cowbell
Uncowed Forces
Pastoral Oddities
Ruminations on Ruminants
Lieges of Legendre
Moodular Arithmetic
Alternative Thinking
Approximating a Constant Range
Two Bases
A Museum Robbery
Acyclic Organic Compounds
Kleofáš and the n-thlon
Lipshitz Sequence
The Two Routes
Edge coloring of bipartite graph
Lomsat gelral
Area of Two Circles' Intersection
Make Palindrome
Queries about less or equal elements
Extract Numbers
Sandy and Nuts
Spongebob and Squares
Day at the Beach
Spongebob and Joke
Patrick and Shopping
Cut Length
Igor In the Museum
Nearest vectors
Queries on a String
Tricky Sum
Subsequences
Restaurant
Wilbur and Strings
Wilbur and Trees
Wilbur and Points
Wilbur and Array
Wilbur and Swimming Pool
Pasha and Phone
Vitaly and Night
Cutting the Line
REQ
Edo and Magnets
Max and Bike
Warrior and Archer
Strange Calculation and Cats
Happy Tree Party
Beautiful Function
Anton and Lines
2Char
BCPC
Super M
The Big Race
The Monster and the Squirrel
PawnChess
Rebranding
Wizards' Duel
Top Secret Task
Three States
Chip 'n Dale Rescue Rangers
Median Smoothing
Duff in Love
Duff and Meat
Duff is Mad
Duff as a Queen
Duff in Mafia
Duff in the Army
Duff in Beach
Duff and Weight Lifting
Laurenty and Shop
Alena's Schedule
Digits of Number Pi
Present for Vitalik the Philatelist
Lizard Era: Beginning
Alice, Bob, Oranges and Apples
Phillip and Trains
Gennady the Dentist
Anton and Ira
Dima and Lisa
Marina and Vasya
Kolya and Tanya
Olesya and Rodion
Robot's Task
Asphalting Roads
Boolean Function
Number of Binominal Coefficients
Superior Periodic Subarrays
Once Again...
GCD Table
Zublicanes and Mumocrates
Kojiro and Furrari
Three Logos
Developing Skills
Luxurious Houses
Vasya the Hipster
Kefa and Watch
Kefa and Dishes
Kefa and Park
Kefa and Company
Kefa and First Steps
Finding Team Member
Raising Bacteria
Mirror Box
Walking!
LCS Again
Weakness and Poorness
"Or" Game
A Problem about Polyline
Modulo Sum
Painting Edges
Flights for Regular Customers
Invariance of Tree
Vasya and Petya's Game
Robots protection
Bots
Run for beer
Bulbo
Spectator Riots
Tablecity
Bribes
Fibonotci
Bear and Three Musketeers
Bear and Elections
Bear and Bowling
Bear and Cavalry
Bear and Drawing
Bear and Blocks
Bear and Poker
Order Book
Arrays
Geometric Progressions
Campus
CNF 2
Minimization
Lengthening Sticks
Pig and Palindromes
Tree Requests
Simple Game
Inventory
Music
Longest Increasing Subsequence
Sign Posts
New Language
Symmetric and Transitive
Primes or Palindromes?
Mausoleum
President and Roads
One-Dimensional Battle Ships
Geometric Progression
Berland National Library
Lineland Mail
Max and Min
Clique in the Divisibility Graph
Restoring Map
Restructuring Company
Logistical Questions
Replicating Processes
Matching Names
Gerald is into Art
Currency System in Geraldion
Gerald and Path
Randomizer
Gerald and Giant Chess
Equivalent Strings
Gerald's Hexagon
A Simple Task
Guess Your Way Out! II
Amr and Chemistry
Amr and The Large Array
Lala Land and Apple Trees
Ann and Half-Palindrome
Vitaly and Cycle
Arthur and Table
Pasha and Tea
Ilya and Diplomas
Case of Fake Numbers
Case of the Zeros and Ones
Case of Computer Network
Case of a Top Secret
Case of Chocolate
Case of Fugitive
Case of Matryoshkas
Ohana Cleans Up
Kyoya and Photobooks
Kyoya and Train
Nudist Beach
Love Triangles
Kyoya and Permutation
Kyoya and Colored Balls
Vanya and Brackets
Vanya and Triangles
Vanya and Scales
Vanya and Books
Vanya and Table
GukiZ and GukiZiana
GukiZ and Binary Operations
GukiZ hates Boxes
ZgukistringZ
GukiZ and Contest
Brackets in Implications
Regular Bridge
Divisibility by Eight
Preparing Olympiad
Two Substrings
Degenerate Matrix
Happy Line
Yura and Developers
Sasha Circle
Haar Features
The Game Of Parity
Looksery Party
Face Detection
Mike and Fun
Mike and Fax
Mike and Friends
Mike and Fish
Mike and Foam
Mike and Feet
Mike and Frog
Soldier and Traveling
Soldier and Number Game
Soldier and Cards
Soldier and Badges
Soldier and Bananas
Paths and Trees
Queue
Woodcutters
Equidistant String
Toy Cars
Sea and Islands
Set of Strings
Listening to Music
Remembering Strings
Destroying Roads
Writing Code
Quest
Playing on Graph
Superhero's Job
Idempotent functions
Duck Hunt
Place Your Ad Here
Infinite Inversions
Bad Luck Island
Ice Cave
School Marks
Summer Dichotomy
Berserk Robot
A Heap of Heaps
Demiurges Play Again
Weird Chess
Tourist's Notes
Quasi Binary
Cutting Banner
Tavas on the Path
Tavas in Kansas
Tavas and Pashmaks
Tavas and Malekas
Tavas and Karafs
Tavas and SaDDas
Tavas and Nafas
Simplified Nonogram
Berland Local Positioning System
Handshakes
Polycarpus' Dice
Covered Path
Encoding
Correcting Mistakes
Landmarks
Work Group
Berland Miners
Different variables
Points in triangle
Levenshtein distance
Jumping frogs
Sum and product
Set subtraction
Diophantine equation
String inside out
Quadratic equation
Group Photo 2 (online mirror version)
Triangles 3000
Fuzzy Search
Data Center Drama
Clique Problem
Glass Carving
Error Correct System
Playing with Paper
Spiders Evil Plan
Pudding Monsters
Transmitting Levels
Om Nom and Necklace
Om Nom and Candies
Om Nom and Dark Park
King of Thieves
Anya and Cubes
Arthur and Walls
Ilya and Sticks
Pasha and String
Vitaliy and Pie
And Yet Another Bracket Sequence
Rooks and Rectangles
The Art of Dealing with ATM
Фото на память - 2 (round version)
Возможно, вы знаете этих людей?
Statistics of Recompressing Videos
Name Quest
Mean Requests
Rotate, Flip and Zoom
Closest Equals
Chicken or Fish?
Photo to Remember
Reposts
Cycling City
Shop
Pluses everywhere
Cubes
DNA Alignment
Two Buttons
Pangram
A and B and Lecture Rooms
A and B and Interesting Substrings
A and B and Team Training
A and B and Compilation Errors
A and B and Chess
Pasha and Pipe
Arthur and Questions
Ilya and Escalator
Anya and Smartphone
Tanya and Postcard
Vitaly and Strings
Drazil and His Happy Friends
Drazil and Morning Exercise
Drazil and Park
Drazil and Tiles
Drazil and Factorial
Drazil and Date
Darth Vader and Tree
R2D2 and Droid Army
Watto and Mechanism
Han Solo and Lazer Gun
Chewbaсca and Number
Inversions problem
Scaygerboss
Subarray Cuts
Constrained Tree
Second price auction
Fox And Polygon
Fox And Travelling
Fox And Dinner
Fox And Jumping
Fox And Names
Fox And Two Dots
Fox And Snake
Progress Monitoring
Pretty Song
Restoring Numbers
Sums of Digits
Painting Pebbles
Maximum in Table
Arthur and Brackets
Tanya and Password
Anya and Ghosts
Anton and currency you all know
Pasha and Pixels
Breaking Good
The Maths Lecture
Guess Your Way Out!
Amr and Pins
Amr and Music
Mr. Kitayuta's Gift
Mr. Kitayuta's Colorful Graph
Mr. Kitayuta vs. Bamboos
Mr. Kitayuta's Technology
Mr. Kitayuta, the Treasure Hunter
Misha and LCP on Tree
Misha and XOR
Misha and Palindrome Degree
Misha and Permutations Summation
Misha and Forest
Misha and Changing Handles
Contest
New Year Running
New Year Shopping
New Year Domino
New Year Santa Network
New Year Book Reading
New Year Permutation
New Year Transportation
Lecture
Watching a movie
Stairs and Lines
Traffic Jams in the Land
Name That Tune
Crazy Town
Subsequences Return
Gears
Distributing Parts
Tennis Game
Removing Columns
Secret Combination
Minimum Difficulty
Modular Equations
Digital Counter
Sharti
Helping People
Obsessive String
Treasure
Vasya and Polynomial
Vasya and Chess
Vasya and Basketball
Vasya and Wrestling
Vasya and Football
Vanya and Field
Vanya and Computer Game
Vanya and Exams
Vanya and Lanterns
Vanya and Cubes
Deciphering
New York Hotel
Up the hill
Treeland Tour
Restoring Increasing Sequence
Hacking Cypher
Team Olympiad
Special Matrices
Hiking
Unbearable Controversy of Being
Given Length and Sum of Digits...
BerSU Ball
SwapSort
Candy Boxes
Giga Tower
Tourists
Prefix Product Sequence
Strip
Fight the Monster
LIS of Sequence
Valid Sets
Palindrome Transformation
OR in Matrix
Calculating Function
Valuable Resources
Factory
Sign on Fence
Kindergarten
Strange Sorting
Maximum Value
Bits
Friends and Presents
Counterexample
ELCA
Random Function and Tree
Game with Strings
Interesting Array
Diverse Permutation
Parcels
Riding in a Lift
Expression
Wavy numbers
Red-Green Towers
Table Decorations
Random Teams
Initial Bet
Dreamoon and Notepad
Dreamoon and Binary
Dreamoon and Strings
Dreamoon and Sets
Dreamoon and Sums
Dreamoon and WiFi
Dreamoon and Stairs
Meta-universe
Strongly Connected City 2
CGCDSSQ
Kamal-ol-molk's Painting
Strongly Connected City
Bayan Bus
Ant colony
Flowers
Captain Marmot
Worms
Keyboard
Design Tutorial: Increase the Constraints
Design Tutorial: Change the Goal
Design Tutorial: Learn from a Game
Design Tutorial: Inverse the Problem
Design Tutorial: Make It Nondeterministic
Design Tutorial: Learn from Life
Design Tutorial: Learn from Math
MUH and Lots and Lots of Segments
MUH and Cube Walls
MUH and House of Cards
MUH and Important Things
MUH and Sticks
Array Sorting
Hamming Distance
Pairwise Sums
Caesar Cipher
Eval
Hexakosioihexekontahexaphobia
Crystal Ball Sequence
Chat Online
I Wanna Be the Guy
Permanent
Hack it!
Two Sets
24 Game
Alex and Complicated Task
Fedor and Essay
George and Job
Fedor and New Game
George and Accommodation
Information Graph
Increase Sequence
Number of Ways
Wonder Room
Cheap Travel
Inbox (100500)
inc ARG
The Classic Problem
World of Darkraft - 2
Substitutes in Number
Restore Cube
No to Palindromes!
Caisa and Tree
Gargari and Permutations
Gargari and Bishops
Caisa and Pylons
Caisa and Sugar
Appleman and Card Game
Appleman and Easy Task
Appleman and a Game
Appleman and Complicated Task
Appleman and a Sheet of Paper
Appleman and Tree
Appleman and Toastman
Roland and Rose
Little Victor and Set
Little Dima and Equation
Vasya and Socks
Pashmak and Graph
Pashmak and Parmida's problem
Pashmak and Buses
Pashmak and Flowers
Pashmak and Garden
An easy problem about trees
Flow Optimality
Bingo!
Distributed Join
Golden System
Fedya and Maths
Laptops
Function
Serega and Fun
Civilization
A Lot of Games
Little Pony and Sort by Shift
Little Pony and Crystal Mine
Little Pony and Lord Tirek
Little Pony and Elements of Harmony
Little Pony and Summer Sun Celebration
Little Pony and Harmony Chest
Little Pony and Expected Maximum
Three strings
Washer, Dryer, Folder
Magic Trick
4-point polyline
Eevee
Devu and Flowers
Count Good Substrings
Predict Outcome of the Game
Sort the Array
Game With Sticks
Jzzhu and Sequences
Jzzhu and Children
Jzzhu and Squares
Jzzhu and Numbers
Jzzhu and Apples
Jzzhu and Cities
Jzzhu and Chocolate
Painting Fence
Suffix Structures
Rewards
DZY Loves Strings
DZY Loves Hash
DZY Loves Bridges
DZY Loves Games
DZY Loves Fibonacci Numbers
DZY Loves Modification
DZY Loves Sequences
DZY Loves Chemistry
DZY Loves Chessboard
DZY Loves Planting
DZY Loves Colors
DZY Loves FFT
DZY Loves Physics
Kolya and Tandem Repeat
Anton and Letters
Gena and Second Distance
Adam and Tree
Artem and Array
Andrey and Problem
Borya and Hanabi
Valera and Number
Valera and Swaps
Valera and Tubes
Valera and Fruits
Valera and Antique Items
Berland Federalization
One-Based Arithmetic
Balancer
Forgotten Episode
Devu and Birthday Celebration
Devu and his Brother
Devu and Partitioning of the Array
Devu, the Dumb Guy
Devu, the Singer and Churu, the Joker
The Child and Binary Tree
The Child and Sequence
The Child and Polygon
The Child and Zoo
The Child and Toy
The Child and Set
The Child and Homework
Banners
Cardboard Box
Dungeons and Candies
Om Nom and Spiders
Feed with Candy
Special Graph
Special Grid
Cardiogram
Pasha Maximizes
Queue on Bus Stop
Furukawa Nagisa's Tree
Nanami's Power Plant
Tachibana Kanade's Tofu
Nanami's Digital Board
Ryouko's Memory Note
Kuriyama Mirai's Stones
Kitahara Haruki's Gift
Square Tiling
Prime Swaps
Football Kit
Choosing Teams
Chemistry Experiment
Random Task
k-Tree
Shower Line
Balls Game
Points and Segments (easy)
Points and Segments
Tricky Function
Guess the Tree
Working out
Xor-tree
Police Patrol
Match & Catch
Checkposts
Prison Transfer
Police Recruits
Sereja and Mirroring
Sereja and Mugs
Sereja and Sets
Sereja and Squares
Sereja and Two Sequences
Sereja and Table
Sereja and Swaps
Colored Jenga
Biathlon Track
Magic Formulas
Megacity
Squats
Bug in Code
Pasha and Hamsters
Playing the ball
Cup Trick
Online Meeting
Start Up
Tricky Password
Big Problems for Organizers
Square Table
Cunning Gena
Crash
President's Path
Population Size
Booking System
Art Union
Guess a number!
Mashmokh and Tokens
Mashmokh and Lights
Mashmokh's Designed Problem
Mashmokh and Water Tanks
Mashmokh and Reverse Operation
Mashmokh and ACM
Mashmokh and Numbers
Maze 2D
2048
Jeopardy!
Spyke Chatting
Data Recovery
E-mail Addresses
Giving Awards
Pattern
Network Configuration
Poster
Kicker
Multi-core Processor
Password Check
Feed the Golorp
A + B Strikes Back
On a plane
000001
Dome
Big Data
Magnum Opus
Mysterious Language
The Great Game
Line to Cashier
k-d-sequence
Largest Submatrix 3
Curious Array
Long Path
Triangle
Hamming Triples
Hill Climbing
Graph Cutting
Toy Sum
Unusual Product
Domino Effect
Gravity Flip
Maze 1D
Minesweeper 1D
Restore Graph
Valera and X
Two Rooted Trees
Beautiful Pairs of Numbers
Strictly Positive Matrix
Upgrading Array
Searching for Graph
Trees in a Row
Nuts
Olympic Games
Roman and Numbers
Team
Sereja and Contests
Vanya and Cards
Inna and Binary Logic
Dima and Bacteria
Inna and Huge Candy Matrix
Inna and New Matrix of Candies
Inna and Choose Options
Fox and Cross
Fox and Number Game
Fox and Meteor Shower
Fox and Perfect Sets
Fox and Card Game
Fox and Minimal path
Fox and Box Accumulation
George and Cards
George and Interesting Graph
George and Number
George and Round
George and Sleep
Game with Points
Fly, freebies, fly!
Second-Price Auction
Bear in the Field
Bear and Floodlight
Bear and Prime Numbers
Bear and Strings
Bear and Raspberry
Multitasking
Coder
Vowels
Antimatter
Propagating tree
Volcanoes
Milking cows
Ksenia and Combinatorics
Ksenia and Pawns
Number Busters
Ksenia and Pan Scales
Sereja and Stairs
Sereja and Dima
Sereja and Dividing
Sereja and Cinema
Sereja and Brackets
Sereja and Tree
Sereja and Prefixes
New Year Cactus
New Year Tree Decorations
New Year Letter
New Year Ratings Change
New Year Present
New Year Candles
Semifinals
Playing with Dice
Cookie Clicker
Developing Game
Captains Mode
Maze
I.O.U.
Red and Black Tree
Tree and Queries
Circling Round Treasures
Maximum Submatrix 2
Divisible by Seven
Inna and Babies
Inna and Sequence
Inna and Dima
Inna and Nine
Inna and Pink Pony
Making Sequences is Fun
Collecting Beats is Fun
Drawing Circles is Fun
Choosing Subtree is Fun
Watching Fireworks is Fun
Counting Rectangles is Fun
Counting Kangaroos is Fun
Subway Innovation
Vessels
Hamburgers
Fox Dividing Cheese
K-Periodic Array
Summer Reading
Broken Monitor
Mittens
Berland Bingo
Rook, Bishop and King
Valera and Queries
Valera and Fools
Valera and Elections
Valera and Contest
Valera and Plates
Sereja and Suffixes
Sereja and Coat Rack
Sereja and Intervals
Sereja and the Arrangement of Numbers
Sereja ans Anagrams
Sereja and Algorithm
Dima and Magic Guitar
Dima and Trap Graph
Dima and Salad
Dima and To-do List
Dima and Guards
The Fibonacci Segment
Good Number
Empty Rectangles
Ghd
Beautiful Set
Free Market
Matrix
Two Circles
Renting Bikes
Fixing Typos
Soroban
Petya and Pipes
Fools and Foolproof Roads
Insertion Sort
Petya and Staircases
Two Semiknights Meet
Levko and Permutation
Levko and Table
Levko and Game
Levko and Sets
Levko and Strings
Levko and Array
Levko and Array Recovery
Neatness
Pair of Numbers
Prime Number
Table
Dima and Kicks
Dima and Hares
Dima and Containers
Dima and Text Messages
Dima and Continuous Line
Flag Day
Group of Students
Xenia and String Problem
Bags and Coins
Compartments
Xenia and Hamming
Knight Tournament
Vasya and Public Transport
Vasya and Digital Root
Lucky Number Representation
Transferring Pyramid
Vasya and Beautiful Arrays
Antichain
Find Maximum
Two Heaps
Domino
Jeff and Periods
Jeff and Digits
Jeff and Permutation
Jeff and Removing Periods
Jeff and Brackets
Jeff and Furik
Jeff and Rounding
Wrong Floyd
Looking for Owls
Resort
TL
Color the Fence
Cinema Line
Pilgrims
Turtles
Subset Sums
Mafia
Difference Row
Doodle Jump
Robot Control
Number Transformation II
Lucky Common Subsequence
Suffix Subgroup
Superstitions Inspection
Black Cat Rush
Chain Letter
Counting Fridays
Triskaidekaphobia
Expecting Trouble
Simple Molecules
Pumping Stations
Water Tree
Read Time
Alternating Current
Rational Resistance
Xenia and Tree
Xenia and Dominoes
Cupboard and Balloons
Xenia and Spies
Xenia and Divisors
Candies Game
Iahub and Xors
Iahub and Permutations
Bubble Sort Graph
Tourist Problem
Maximal Area Quadrilateral
The Wall
Three Swaps
Xenia and Bit Operations
Xenia and Weights
Xenia and Ringroad
Helpful Maths
Optimize!
Divisor Tree
Book of Evil
Quiz
Routine Problem
Vasily the Bear and Painting Square
Vasily the Bear and Beautiful Strings
Vasily the Bear and Sequence
Vasily the Bear and Fly
Vasily the Bear and Triangle
Buy One, Get One Free
Counting Skyscrapers
Rectangles and Square
More Reclamation
Palindrome
Banana
Eight Point Sets
Candy Bags
Summer Earnings
Characteristics of Rectangles
Secrets
Binary Key
Theft of Blueprints
Students' Revenge
Maximum Absurdity
Down the Hatch!
Escaping on Beaveractor
The Great Julya Calendar
Shave Beaver!
Oh Sweet Beaverette
Cakeminator
Evil
The Evil Temple and the Moving Rocks
Graph Reconstruction
Biridian Forest
Purification
Sheldon and Ice Pieces
IQ Test
Axis Walking
Block Tower
Magic Five
Hungry Sequence
Flipping Game
The Red Button
Reclamation
Monsters and Diamonds
Stadium and Games
Square and Rectangles
Two permutations
Tournament-graph
Black-and-White Cube
Ciel and Flowers
Ciel and Dancing
Ciel and Gondolas
Ciel and Flipboard
Ciel the Commander
Ciel and Duel
Ciel and Robot
Ping-Pong (Easy Version)
Ping-Pong
Have You Ever Heard About the Word?
Kalila and Dimna in the Logging Industry
Psychos in a Line
Malek Dance Club
Strings of Power
Even Odds
Princess and Her Shadow
Game with Powers
Perfect Pair
Good Substrings
Suns and Rays
Summer Homework
PE Lesson
Tidying Up
EKG
Special Task
Sereja and Array
Sereja and Bottles
Sereja and Straight Lines
Sereja and Subsequences
Sereja and Periods
Sereja and Contest
Ilya and Two Numbers
Ilya and Roads
Ilya and Matrix
Ilya and Queries
Ilya and Bank Account
Archer
Whose sentence is it?
Biologist
Interval Cubing
Fetch the Treasure
Cats Transport
The Closest Pair
Sheep
Tennis Rackets
Memory for Arrays
Context Advertising
Morning run
White, Black and White Again
Playing with String
Olya and Graph
Ivan and Powers of Two
Continued Fractions
Calendar
Pythagorean Theorem II
Random Ranking
Rotatable Number
Minimum Modular
Rectangle Puzzle II
Lucky Permutation Triple
Eugeny and Play List
Eugeny and Array
Yaroslav and Arrangements
Yaroslav and Divisors
Yaroslav and Algorithm
Yaroslav and Time
Yaroslav and Sequence
Empire Strikes Back
Painting Square
Coach
Array
Ksusha the Squirrel
Ksusha and Array
Sail
Snow Footprints
Mystic Carvings
Color the Carpet
Splitting the Uniqueness
Fish Weight
Parity Game
Yaroslav and Two Strings
Yaroslav and Permutations
Yaroslav and Points
Greg and Caves
Greg and Friends
Greg and Graph
Greg and Array
Shaass the Great
Shaass and Painter Robot
Shaass and Lights
Shaass and Bookshelf
Shaass and Oskols
Close Vertices
Ksusha and Square
Cube Problem
Distinct Paths
Weird Game
Copying Data
Connected Components
Beautiful IP Addresses
Network Topology
SMSC
Tree-String Problem
Parallel Programming
Network Mask
Command Line Arguments
Spyke Talks
Greedy Petya
HQ
Orange
WTF?
QR code
Mysterious strings
Polo the Penguin and Matrix
Polo the Penguin and Segments
Polo the Penguin and Lucky Numbers
Polo the Penguin and Trees
Polo the Penguin and XOR operation
Polo the Penguin and Houses
Polo the Penguin and Strings
Pipeline
Ladies' Shop
Main Sequence
Shifting
Positions in Permutations
Permutation Sum
Building Permutation
Find Marble
Slightly Decreasing Permutations
Cows and Poker Game
Cows and Primitive Roots
Cow Tennis Tournament
Cows and Cool Sequences
Coin Troubles
Cow Program
Cows and Sequence
Sausage Maximization
Yet Another Number Game
XOR and OR
Painting Eggs
Bit++
Nearest Fraction
Word Capitalization
k-Maximum Subsequence Sum
Game on Tree
Maximum Xor Secondary
Rectangle Puzzle
Beautiful Decomposition
The Minimum Number of Variables
Ladder
Books
Point on Spiral
New Problem
Circle Line
Binary Tree on Plane
Google Code Jam
Set of Points
Learning Languages
Little Girl and Problem on Trees
Little Girl and Maximum XOR
Little Girl and Maximum Sum
Little Girl and Game
Lunch Rush
Convex Shape
Lights Out
Mirror Room
Lovely Matrix
The Last Hole!
Zero Tree
k-Multiple Free Set
Dima and Game
Dima and Figure
Dima and Horses
Dima and Two Sequences
Dima and Staircase
Dima and Sequence
Dima and Friends
Three Horses
Secret
Prime Matrix
Beautiful Year
Multithreading
String Theory
Maximum Waterfall
Flawed Flow
Greenhouse Effect
Magical Boxes
Wall Bars
Beautiful Sets of Points
Berland Traffic
Subtractions
More Queries to Array...
BerDonalds
Below the Diagonal
Queue at the School
Stones on the Table
Roadside Trees (Simplified Edition)
Colorful Stones (Simplified Edition)
Roadside Trees
Colorful Stones
Choosing Balls
Good Sequences
Escape from Stones
Rhombus
Cycle in Graph
Roma and Changing Signs
Roma and Lucky Numbers
Maxim and Calculator
Maxim and Increasing Subsequence
Maxim and Matrix
Maxim and Restaurant
Maxim and Discounts
Dividing Kingdom
Balls and Boxes
Ancient Prophesy
Adding Digits
Little Elephant and Magic Square
Little Elephant and Chess
Little Elephant and Tree
Little Elephant and Broken Sorting
Little Elephant and LCM
Little Elephant and Elections
Little Elephant and Bits
Greedy Elevator
View Angle
Playing Cubes
Lucky Arrays
Liars and Serge
Furlo and Rublo and Game
Mr. Bender and Square
Almost Arithmetical Progression
Code Parsing
Greg's Workout
Dormitory
Rats
Anagram
Jury Size
Cards with Numbers
Printer
Table with Letters - 2
Physics Practical
Boys and Girls
Unsorting Array
Little Xor
Tree and Table
Playing with Permutations
Points on Line
Mad Joe
Building Bridge
Movie Critics
Restoring IPv6
Paper Work
Endless Matrix
Donkey and Stars
Piglet's Birthday
Sweets for Everyone!
Robo-Footballer
Chilly Willy
Cupboards
Blood Cousins Return
Colorful Graph
Beauty Pageant
Increase and Decrease
Buggy Sorting
Queries for Number of Palindromes
Suggested Friends
Log Stream Analysis
Mishap in Club
Restoring Table
Game with Coins
Internet Address
System Administrator
Undoubtedly Lucky Numbers
Dividing Orange
Colorado Potato Beetle
Hydra
The Brand New Function
XOR on Segment
Dispute
Big Segment
Heads or Tails
Challenging Balloons
Flights
Numbers
Friends
Old Peykan
TorCoder
Road Repairs
Easy Tape Programming
Two Bags of Potatoes
Meeting Her
Tape Programming
World Eater Brothers
Boring Partition
Not Wool Sequences
Build String
T-decomposition
Primes on Interval
Young Table
Free Cash
Easy Number Challenge
Boy or Girl
Number Challenge
Graph Game
Cyclical Quest
Let's Play Osu!
LCM Challenge
Merging Two Decks
Practice
Champions' League
Weather
Reading
Lefthanders and Righthanders
Non-square Equation
Quick Tortoise
Doe Graphs
Cycles
Cactus
Magic Box
To Add or Not to Add
Magic, Wizardry and Wonders
T-primes
Dragons
Gifts
Shifts
The Road to Berland is Paved With Good Intentions
Zigzag
Fractal Detector
Is your horseshoe on the other hoof?
Effective Approach
Where do I Turn?
Noble Knight's Path
The table
Anniversary
Naughty Stone Piles
Flying Saucer Segments
Unsolvable
Snake
Barcode
Well-known Numbers
Parallelepiped
Planar Graph
Spider
Partial Sums
Two Strings
Bracket Sequence
Decoding Genome
Reducing Fractions
Cosmic Tables
Shooshuns and Sequence
Little Elephant and Numbers
Little Elephant and Function
Little Elephant and Inversions
Little Elephant and Triangle
Little Elephant and Shifts
Little Elephant and Array
Little Elephant and Problem
Choosing Capital for Treeland
Color Stripe
Special Offer! Super Price 999 Bourles!
k-String
Airport
Mountain Scenery
Alien DNA
Bitonix' Patrol
Formurosa
Blackboard Fibonacci
Ice Skating
Martian Luck
Spider's Web
Hiring Staff
Forming Teams
Tiling with Hexagons
Periodical Numbers
Hot Days
Crosses
Olympic Medal
Bicycle Chain
Hometask
System of Equations
Stars
Relay Race
IT Restaurants
Cutting a Fence
Cowboys
Polycarpus is Looking for Good Substrings
Privatization
Trails and Glades
Pixels
Multicolored Marbles
Blood Cousins
Prizes, Prizes, more Prizes
Police Station
Solitaire
Dubstep
The Beaver's Problem - 3
Game with Two Trees
Military Trainings
Beaver's Calculator 1.0
Little Elephant and Sorting
Little Elephant and Rozdil
Little Elephant and Strings
Little Elephant and Retro Strings
Little Elephant and Furik and Rubik
Little Elephant and Cards
Little Elephant and Interval
Transportation
Hit Ball
Photographer
Game on Paper
Two Problems
Brand New Easy Problem
LLPS
Thoroughly Bureaucratic Organization
Brand New Problem
Fragile Bridges
Guess That Car!
Clear Symmetry
Tractor College
Programming Language
Football Championship
Drinks
Special Olympics
Hexadecimal's theorem
Gripping Story
Cube Snake
Delivering Carcinogen
Jumping on Walls
About Bacteria
Limit
Plate Game
Opening Portals
The Next Good String
Paint Tree
Infinite Maze
Lexicographically Maximum Subsequence
Building Forest
Analyzing Polyline
Try and Catch
After Training
Let's Watch Football
Fibonacci Number
Two Segments
Xor
Cutting Figure
Walking in the Rain
Funky Numbers
Thwarting Demonstrations
Metro Scheme
Fools and Roads
Demonstration
Dynasty Puzzles
Counter Attack
Non-Secret Cypher
STL
Surrounded
Vasya and the Bus
Counting Rhombi
Cut Ribbon
Stack
Binary Notation
HQ9+
Asterisks
A + Reverse B
Hexagonal Numbers
Heaven Tour
BRT Contract
Weak Memory
AlgoRace
Growing Mushrooms
Comparing Strings
Soap Time! - 2
Visit of the Great
Clever Fat Rat
Mushroom Scientists
Plant
Candy Shop
T-shirt
Cyclic Coloring
Zoo
Headquarters
Wooden Fence
Optimal Sum
Vasya's Calendar
Battlefield
Number of Triplets
Series of Crimes
Mathematical Analysis Rocks!
Name
Letter
Divisibility Rules
Defragmentation
Representative Sampling
The Beaver's Problem - 2
Magic Squares
Smart Beaver and Resolving Collisions
Greedy Merchants
Educational Game
Script Generation
Space Voyage
Encrypting Messages
Rectangular Game
Good Matrix Elements
Hyper String
Playing with Superglue
Word Cut
Trading Business
Gnomes of Might and Magic
Power Defence
Plane of Tanks: Duel
Geometry Horse
Plane of Tanks: Pro
Robot Bicorn Attack
Range Increments
File List
Problem About Equation
Camping Groups
Deputies
Spiral Maximum
Chamber of Secrets
Rock-Paper-Scissors
BHTML+BCSS
Calendar Reform
Pseudorandom Sequence Period
Phone Code
A polyline
Mysterious numbers - 2
ucyhf
MYSTERIOUS LANGUAGE
Broken checker
A Piece of Cake
Star
Mysterious numbers - 1
Replacing Digits
Wizards and Minimal Spell
Wizards and Demonstration
Wizards and Bets
Wizards and Roads
Wizards and Numbers
Wizards and Huge Prize
Wizards and Trolleybuses
Tetrahedron
Shoe Store
Median
Rank List
Compatible Numbers
Beard Graph
Another Problem on Strings
Burning Midnight Oil
Supercentral Point
Polycarpus and Tasks
Minimum Diameter
Machine Programming
Ancient Berland Hieroglyphs
Variable, or There and Back Again
e-Government
Large Refrigerator
Lemmings
Brackets
Truncatable primes
Alternating case
Non-decimal sum
Factorial zeros
Remove digits
Prime factorization
Binary notation
Pentagonal numbers
Polycarpus the Safecracker
Distance in Tree
Abracadabra
Dress'em in Vests!
Buses and People
Edges in MST
Find Pair
Unlucky Ticket
Twins
Zebra Tower
Palindrome pairs
String Manipulation 1.0
Matchmaker
Friends or Not
Phone Talks
Ice Sculptures
Cd and pwd commands
Taxi
Next Round
Trace
Game Outcome
Mrs. Hudson's Pancakes
Clues
Suspects
Message
Combination
Martian Colony
Flatland Fencing
Double Profiles
Colliders
Euclidean Distance
Date Change
A + B
Frames
Pocket Book
Steps
Marks
Soft Drinking
Freezing with Style
Mission Impassable
Smart Cheater
Quantity of Strings
Win or Freeze
Martian Strings
Coloring Brackets
Division into Teams
Martian Clock
Business trip
Porcelain
Bag of mice
Terse princess
Escape
Insomnia cure
Smile House
Punctuation
Lucky Mask
Lucky Ticket
Lucky Queries
Lucky Pair
Lucky Subsequence
Lucky Number 2
Lucky Conversion
Competition
Missile Silos
Anagram Search
Meeting
Arrival of the General
Help Kingdom of Far Far Away 2
Help Vasilisa the Wise 2
Help Greg the Dwarf 2
Help Shrek and Donkey 2
Help Caretaker
Help General
Help Farmer
Clearing Up
Take-off Ramps
Hopscotch
Amusing Joke
New Year Snowflake
New Year Contest
New Year Snowmen
New Year Cards
New Year Table
Wallpaper
Petr and Book
Hellish Constraints
World of Darkraft
Mushroom Gnomes - 2
Digits Permutations
Literature Lesson
Last Chance
Palindromes
History
Postcards and photos
Ternary Logic
Presents
Weak Subsequence
Cycle
Zero-One
Rectangle and Square
Pairs of Numbers
Average Numbers
Unary
Bits of merry old England
Constants in the language of Shakespeare
Logo Turtle
Piet
Turing Tape
Present to Mom
Yet Another Task with Queens
Subway
The World is a Theatre
Opposites Attract
cAPS lOCK
Date calculation
Array sorting
Balanced brackets
CAPS LOCK ON
Tribonacci numbers
Exponentiation
Decimal sum
Gnikool Ssalg
Hexagonal numbers
Students and Shoelaces
Games with Rectangle
Canvas Frames
Wasted Time
Pills
Fibonacci Sums
E-reader Display
Hot Bath
MST Company
Two progressions
Hobbits' Party
Simple XML
Measuring Lengths in Baden
The number of positions
Prime Permutation
Lucky Substring
Lucky Division
Lucky Array
Lucky Segments
Lucky Transformation
Lucky Sum
Luck is in Numbers
Brevity is Soul of Wit
Boom
Spiders
Put Knight!
Three Sons
Winnie-the-Pooh and honey
Quiz League
Alternative Reality
Education Reform
Before Exam
Epic Game
Bertown roads
Caesar's Legions
Fancy Number
Present from Lena
String Task
Tree or not Tree
Not Quick Transformation
Very Interesting Game
Little Pigs and Wolves
Linear Kingdom Races
Unambiguous Arithmetic Expression
Plumber
Lawnmower
PFAST Inc.
Cifera
Sleeping
Museum
Double Happiness
Petr#
Grammar Lessons
Petya and Square
Petya and Strings
Petya and Rectangle
Petya and Coloring
Petya and Spiders
Petya and Divisors
Petya and Inequiations
Lucky String
Nearly Lucky Number
Lucky Interval
Lucky Sorting
Lucky Tree
Lucky Probability
Lucky Sum of Digits
Datatypes
Palindromic Times
Darts
Crime Management
Arrangement
Basketball Team
Dorm Water Supply
Space Rescuers
Buns
Choosing Laptop
Lift and Throw
Entertaining Geodetics
Item World
Dark Assembly
Transmigration
Blackjack
Buying Sets
Time to Raid Cowavans
Russian Roulette
Cthulhu
Testing Pants for Sadness
Clothes
Candies and Stones
Castle
Vectors
Interval Coloring
Rotation
Name the album
Polynom
Lamps in a Line
World of Mouth
A+B
Friendly Numbers
Carpeting the Room
Help Chef Gerasim
Help Far Away Kingdom
Help Shrek and Donkey
Help Monks
Help Greg the Dwarf
Help King
Help Victoria the Wise
Leaders
Robot in Basement
Winning Strategy
Superset
Lucky Numbers (easy)
Lucky Country
Horse Races
Volleyball
Hockey
Restoring Password
Lostborn
Flags
Azembler
End of Exams
Binary Number
Igloo Skyscraper
Grocer's Problem
Ski Base
Newspaper Headline
African Crossword
Cableway
Fire and Ice
Space mines
Chip Play
Widget Library
Robbery
Chord
Mogohu-Rea Idol
Beautiful Road
Interesting Game
Vasya and Types
Trains
Long sequence
Powerful array
Genetic engineering
Tetris revisited
Reflection
Guard Towers
Petya and Tree
Embassy Queue
Biathlon
Toy Army
Track
Doctor
Corridor
Two out of Three
General Mobilization
Sets
Double Cola
Polycarp's Picture Gallery
Average Score
Sequence Formatting
Plug-in
Depression
Panoramix's Prediction
Security System
Beaver
Colorful Field
Bus Game
Evacuation
Archer's Shot
Beaver Game
Easter Eggs
Haiku
Martian Food
Domino Carpet
Beavermuncher-0xFF
Falling Anvils
Heroes
Tourist
Plus and xor
Mutation
Mice
Gift
Ship's Shortest Path
Big Maximum Sum
Modified GCD
Facetook Priority Wall
Life Without Zeros
Shift It!
Hanger
Chessboard Billiard
Train
Room Leader
Plane of Tanks
Morrowindows
FreeDiv
LionAge II
Need For Brake
The Elder Trolls IV: Oblivon
Goofy Numbers
Reverse It!
Fibonacci army
Oil
Ali goes shopping
Perse-script
Extraordinarily Nice Numbers
INI-file
Goshtasp, Vishtasp and Eidi
Nuclear Fusion
Round Table Knights
Progress Bar
Way Too Long Words
Information Reform
Professor's task
Text Messaging
Subsegments
Dot
Bets
Young Physicist
Contact
Half-decay tree
Synchrophasotron
Energy exchange
Irrational problem
Save the City!
Optical Experiment
Sequence of Balls
Restoration of the Permutation
Partial Teacher
Petya and Post
Petya and His Friends
Petya and File System
Petya and Countryside
Petya and Java
Harry Potter and Moving Staircases
Harry Potter and the Sorting Hat
Harry Potter and the Golden Snitch
Harry Potter and the History of Magic
Harry Potter and Three Spells
Sort the Table
Table Bowling
Path Canonization
Domain
Prime Segment
Factorial
Sweets Game
Dividing Island
Bulls and Cows
Settlers' Training
Sinking Ship
World Evil
Wormhouse
Inquisition
Tyndex.Brome
A Student's Dream
Enemy is weak
Eternal Victory
Capture Valerian
Hard Work
Ultra-Fast Mathematician
Mushroom Gnomes
Savior
Mushroom Strife
Serial Time!
Where Are My Flakes?
Shortest Path
Team Arrangement
Title
Word
Trees
Chat room
Chess
Martian Architecture
Square Earth?
Domino Principle
Changing a String
Corporation Mail
Spoilt Permutation
Bar
Very simple problem
Beautiful numbers
Pie or die
Smallest number
Flea travel
Vacuum Сleaner
Writing a Song
First Digit Law
Cutting Jigsaw Puzzle
Dead Ends
Physical Education
Little Frog
Blog Photo
Autocomplete
Circular RMQ
Right Triangles
123-sequence
Caterpillar
Pentagon
Geometrical problem
Three Base Stations
bHTML Tables Analisys
Cheaterius's Problem
Square Equation Roots
Bombing
Happy Farm 5
Choosing Symbol Pairs
Domino piling
Common ancestor
Disposition
Sleuth
Black and White
Galaxy Union
Snow sellers
Ivan the Fool VS Gorynych the Dragon
The Race
Land Lot
Rock-paper-scissors
Cannon
Safe
Crossword
Triangular numbers
Emperor's Problem
Hercule Poirot Problem
Comb
Hamsters and Tigers
T-shirts from Sponsor
Ball Game
Planting Trees
TCMCF+++
Road Problem
Prime Problem
Goats and Wolves
Director
Event Dates
Dancing Lessons
School
Codecraft III
Triminoes
Toys
Phone Number
Shooting Gallery
BerPaint
Anfisa the Monkey
Hyperdrive
Cola
Indian Summer
Baldman and the military
Strange town
Safe cracking
Game of chess unfinished
Guilty --- to the kitchen!
3-cycles
Pawn
Email address
Martian Dollar
Translation
Number Table
Berland Square
Repaintings
Find Color
Testing
Spelling Check
Inverse Function
Pacifist frogs
What Has Dirichlet Got to Do with That?
Cubical Planet
Moon Craters
Company Income Growth
C*++ Calculations
The Great Marathon
Smart Boy
Let's Go Rolling!
Vasya the Architect
Blinds
Army
Trial for Chief
Lesson Timetable
Old Berland Language
Two Paths
New Game with a Chess Piece
Bowls
Fractal
Extra-terrestrial Intelligence
Animals
Fire Again
Warehouse
Collisions
Road Map
Page Numbers
Sale
Reconnaissance 2
Helper
Wonderful Randomized Sum
String Problem
What is for dinner?
Hide-and-Seek
Flea
Borze
Reconnaissance
TV Game
Schedule
Sysadmin Bob
Worms Evolution
Tricky and Clever Password
King's Problem?
Codeforces World Finals
Accounting
Quarrel
Ant on the Tree
Mail Stamps
Spit Problem
DravDe saves the world
Don't fear, DravDe is kind
Bath Queue
pSort
Bender Problem
Number With The Given Amount Of Divisors
Ring Road 2
Unordered Subsequence
Next Test
Tickets
Parquet
Almost Prime
Test
Roads not only in Berland
Roads in Berland
Phone numbers
IQ test
Berland collider
Broken robot
Sequence of points
F1 Champions
Ring road
Tetragon
Oranges and Apples
You're Given a String...
Scheme
Bargaining Table
Second Order Statistics
Traveling Graph
Stripe 2
Intersection
Jabber ID
Dijkstra?
BerOS file system
Fairy
Deletion of Repeats
Checkout Assistant
World Football Cup
Flag 2
Seller Bob
Stripe
Platforms
Palisection
Notepad
Hierarchy
Noldbach problem
Fish
Logging
Burglar and Matches
Map
Industrial Nim
Laser
Cottage Village
Camels
Young Photographer
Holes
Sequence
Letter A
Start of the session
Ball
Fruits
Correct Solution?
Super Agent
Forward, march!
How Many Squares?
Jumping Jack
Greedy Change
LCIS
Digital Root
Cinema Cashier
Power Consumption Calculation
Interestring graph and Apples
How many trees?
Hexadecimal's Numbers
Running Student
Die Roll
Beads
Looking for Order
Obsession with Robots
Train and Peter
Defining Macros
Palindrome Degree
Memory Manager
Kalevitch and Chess
Exposition
Lizards and Basements 2
Alice, Bob and Chocolate
President's Office
Bindian Signalizing
Follow Traffic Rules
Longest Regular Bracket Sequence
Center Alignment
Chat Servers Outgoing Traffic
Mysterious Present
Registration System
Before an Exam
Watermelon
Least Cost Bracket Sequence
Tic-tac-toe
Lorry
Shortest path of the king
Commentator problem
The least round way
Winner
Ancient Berland Circus
Spreadsheet
Theatre Square
